diff --git a/src/sage/functions/airy.py b/src/sage/functions/airy.py
index ec1579fae19..9d6b8b3576f 100644
--- a/src/sage/functions/airy.py
+++ b/src/sage/functions/airy.py
@@ -48,7 +48,6 @@
 from sage.symbolic.function import BuiltinFunction
 from sage.symbolic.expression import Expression
 from sage.symbolic.ring import SR
-from sage.structure.coerce import parent as sage_structure_coerce_parent
 from sage.functions.other import gamma
 from sage.rings.integer_ring import ZZ
 from sage.rings.real_double import RDF
diff --git a/src/sage/functions/special.py b/src/sage/functions/special.py
index c39c1f84c04..f6ddcff4241 100644
--- a/src/sage/functions/special.py
+++ b/src/sage/functions/special.py
@@ -168,9 +168,7 @@
 from sage.symbolic.function import BuiltinFunction, is_inexact
 from sage.symbolic.expression import Expression
 from sage.calculus.calculus import maxima
-from sage.structure.coerce import parent
-from sage.structure.element import get_coercion_model
-from sage.structure.parent import Parent
+from sage.structure.element import parent
 from sage.libs.mpmath import utils as mpmath_utils
 from sage.functions.all import sqrt, sin, cot, exp
 from sage.symbolic.all import I
diff --git a/src/sage/groups/perm_gps/all.py b/src/sage/groups/perm_gps/all.py
index 0ef588fb57f..28b026fc864 100644
--- a/src/sage/groups/perm_gps/all.py
+++ b/src/sage/groups/perm_gps/all.py
@@ -16,6 +16,3 @@
 PermutationGroupMorphism = PermutationGroupMorphism_im_gens
 
 from .cubegroup import CubeGroup, RubiksCube
-
-from sage.misc.lazy_import import lazy_import
-lazy_import("sage.groups.perm_gps", "permgroup", "pg", deprecation=18140)
diff --git a/src/sage/libs/linbox/linbox.pyx b/src/sage/libs/linbox/linbox.pyx
index 7c1087ca506..4c0837af575 100644
--- a/src/sage/libs/linbox/linbox.pyx
+++ b/src/sage/libs/linbox/linbox.pyx
@@ -8,7 +8,7 @@ Linbox interface
 
 from sage.libs.gmp.mpz cimport *
 from sage.rings.integer cimport Integer
-from sage.misc.misc import verbose, get_verbose, cputime, UNAME
+from sage.misc.misc import verbose, get_verbose
 
 ##########################################################################
 ## Sparse matrices modulo p.
diff --git a/src/sage/misc/all.py b/src/sage/misc/all.py
index 377a45090fa..bdd492faf96 100644
--- a/src/sage/misc/all.py
+++ b/src/sage/misc/all.py
@@ -23,7 +23,6 @@
 from .temporary_file import tmp_dir, tmp_filename
 
 from .misc_c import prod, running_total, balanced_sum
-lazy_import('sage.misc.misc_c', ['is_32_bit', 'is_64_bit'], deprecation=17460)
 mul = prod
 add = sum
 
@@ -82,8 +81,6 @@
 
 lazy_import("sage.misc.cython", ["cython_lambda", "cython_create_local_so"]) 
 lazy_import("sage.misc.cython_c", "cython_compile", "cython")
-lazy_import("sage.misc.cython_c", "cython_compile", "pyrex", deprecation=9552)
-lazy_import("sage.misc.cython_c", "cython_compile", "sagex", deprecation=9552)
 
 from .persist import save, load, dumps, loads, db, db_save
 
@@ -134,7 +131,6 @@
                         n, N,
                         objgens,
                         objgen,
-                        one,
                         order,
                         rank,
                         regulator,
@@ -145,7 +141,7 @@
                         squarefree_part,
                         symbolic_sum as sum,
                         transpose,
-                        zero)
+                        )
 
 
 from .latex import LatexExpr, latex, view, pretty_print_default
@@ -201,7 +197,3 @@ def _latex_(self):
         elif not '~' in self:
          delim = '~'
         return r"""\verb%s%s%s"""%(delim, self.replace('\n\n','\n').replace('\n','; '), delim)
-
-
-lazy_import("sage.misc", "messaging", deprecation=18140)
-
diff --git a/src/sage/misc/functional.py b/src/sage/misc/functional.py
index bdf7cb60cfd..1ff6c75ebc3 100644
--- a/src/sage/misc/functional.py
+++ b/src/sage/misc/functional.py
@@ -1321,26 +1321,6 @@ def objgen(x):
     """
     return x.objgen()
 
-def one(R):
-    """
-    Returns the one element of the ring R.
-
-    EXAMPLES::
-
-        sage: one(RR)
-        doctest:...: DeprecationWarning: one(R) is deprecated, use R.one() or R(1) instead
-        See http://trac.sagemath.org/17158 for details.
-        1.00000000000000
-        sage: R.<x> = PolynomialRing(QQ)
-        sage: one(R)*x == x
-        True
-        sage: one(R) in R
-        True
-    """
-    from sage.misc.superseded import deprecation
-    deprecation(17158, 'one(R) is deprecated, use R.one() or R(1) instead')
-    return R(1)
-
 def order(x):
     """
     Returns the order of x. If x is a ring or module element, this is
@@ -1554,24 +1534,3 @@ def transpose(x):
         [3 6 9]
     """
     return x.transpose()
-
-
-def zero(R):
-    """
-    Returns the zero element of the ring R.
-
-    EXAMPLES::
-
-        sage: zero(RR)
-        doctest:...: DeprecationWarning: zero(R) is deprecated, use R.zero() or R(0) instead
-        See http://trac.sagemath.org/17158 for details.
-        0.000000000000000
-        sage: R.<x> = PolynomialRing(QQ)
-        sage: zero(R) in R
-        True
-        sage: zero(R)*x == zero(R)
-        True
-    """
-    from sage.misc.superseded import deprecation
-    deprecation(17158, 'zero(R) is deprecated, use R.zero() or R(0) instead')
-    return R(0)
diff --git a/src/sage/misc/interpreter.py b/src/sage/misc/interpreter.py
deleted file mode 100644
index eb07a897011..00000000000
--- a/src/sage/misc/interpreter.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from sage.misc.lazy_import import lazy_import
-
-lazy_import('sage.repl.interpreter', '_do_preparse', 'do_preparse', deprecation=17460)
diff --git a/src/sage/misc/misc.py b/src/sage/misc/misc.py
index 18bdd784cb4..2625b8f26c8 100644
--- a/src/sage/misc/misc.py
+++ b/src/sage/misc/misc.py
@@ -44,11 +44,6 @@
     Importing sxrange from here is deprecated. If you need to use it, please import it directly from sage.arith.srange
     See http://trac.sagemath.org/20094 for details.
     <generator object at 0x...>
-    sage: sage.misc.misc.mul([3,4])
-    doctest:...: DeprecationWarning:
-    Importing prod from here is deprecated. If you need to use it, please import it directly from sage.misc.all
-    See http://trac.sagemath.org/17460 for details.
-    12
     sage: sage.misc.misc.cancel_alarm()
     doctest:...: DeprecationWarning:
     Importing cancel_alarm from here is deprecated. If you need to use it, please import it directly from cysignals.alarm
@@ -80,13 +75,7 @@
 from sage.misc.lazy_import import lazy_import
 lazy_import('sage.arith.srange', ('xsrange', 'srange', 'ellipsis_range', 'ellipsis_iter'), deprecation=20094)
 lazy_import('sage.arith.srange', 'xsrange', 'sxrange', deprecation=20094)
-lazy_import('sage.misc.temporary_file', ('tmp_dir', 'tmp_filename', 'delete_tmpfiles'), deprecation=17460)
-lazy_import('sage.misc.banner', ('version', 'banner'), deprecation=17460)
-lazy_import('sage.env', '*', deprecation=17460)
-lazy_import('sage.misc.decorators', ('infix_operator', 'decorator_defaults', 'sage_wraps'), deprecation=17460)
-lazy_import('sage.misc.all', ('prod', 'running_total', 'balanced_sum', 'is_64_bit', 'is_32_bit'), deprecation=17460)
 lazy_import('cysignals.alarm', ('alarm', 'cancel_alarm'), deprecation=20002)
-mul = prod
 
 
 from sage.env import DOT_SAGE, HOSTNAME
@@ -680,7 +669,7 @@ def coeff_repr(c, is_latex=False):
             return "(%s)"%s
     return s
 
-def repr_lincomb(terms, coeffs = None, is_latex=False, scalar_mult="*", strip_one=False, repr_monomial = None, latex_scalar_mult = None):
+def repr_lincomb(terms, is_latex=False, scalar_mult="*", strip_one=False, repr_monomial = None, latex_scalar_mult = None):
     """
     Compute a string representation of a linear combination of some
     formal symbols.
@@ -757,23 +746,7 @@ def repr_lincomb(terms, coeffs = None, is_latex=False, scalar_mult="*", strip_on
 
         sage: repr_lincomb([('a',1), ('b',2), ('c',3)], repr_monomial = lambda s: s+"1")
         'a1 + 2*b1 + 3*c1'
-
-
-    TESTS:
-
-    For backward compatibility (will be deprecated)::
-
-        sage: repr_lincomb(['a','b','c'], [1,2,3])
-        doctest:...: DeprecationWarning: calling `repr_lincomb(monoms, coeffs)` is deprecated; please specify a list of tuples (monom, coeff) instead
-        See http://trac.sagemath.org/12484 for details.
-        'a + 2*b + 3*c'
     """
-    # For backward compatibility
-    if coeffs is not None:
-        from sage.misc.superseded import deprecation
-        deprecation(12484, "calling `repr_lincomb(monoms, coeffs)` is deprecated; please specify a list of tuples (monom, coeff) instead")
-        terms = zip(terms, coeffs)
-
     # Setting scalar_mult: symbol used for scalar multiplication
     if is_latex:
         if latex_scalar_mult is not None:
diff --git a/src/sage/misc/misc_c.pyx b/src/sage/misc/misc_c.pyx
index 1dc7a386892..48388b407d9 100644
--- a/src/sage/misc/misc_c.pyx
+++ b/src/sage/misc/misc_c.pyx
@@ -426,13 +426,6 @@ cdef balanced_list_sum(L, Py_ssize_t offset, Py_ssize_t count, Py_ssize_t cutoff
         return balanced_list_sum(L, offset, k, cutoff) + balanced_list_sum(L, offset + k, count - k, cutoff)
 
 
-#################################################################
-# 32/64-bit computer?
-#################################################################
-is_64_bit = sys.maxsize >= 9223372036854775807
-is_32_bit = not is_64_bit
-
-
 cpdef list normalize_index(object key, int size):
     """
     Normalize an index key and return a valid index or list of indices
diff --git a/src/sage/misc/temporary_file.py b/src/sage/misc/temporary_file.py
index 0907b8a4ff0..0cabfd0ed2c 100644
--- a/src/sage/misc/temporary_file.py
+++ b/src/sage/misc/temporary_file.py
@@ -185,21 +185,8 @@ def graphics_filename(ext='.png'):
         True
         sage: fn.endswith('.jpeg')
         True
-
-    Historically, it was also possible to omit the dot. This has been
-    changed in :trac:`16640` but it will still work for now::
-
-        sage: fn = graphics_filename("jpeg")
-        doctest:...: DeprecationWarning: extension must now include the dot
-        See http://trac.sagemath.org/16640 for details.
-        sage: fn.endswith('.jpeg')
-        True
     """
     import sage.plot.plot
-    from sage.misc.superseded import deprecation
-    if ext[0] not in '.-':
-        deprecation(16640, "extension must now include the dot")
-        ext = '.' + ext
     if sage.plot.plot.EMBEDDED_MODE:
         # Don't use this unsafe function except in the notebook, #15515
         i = 0
@@ -208,6 +195,7 @@ def graphics_filename(ext='.png'):
         filename = 'sage%d%s'%(i,ext)
         return filename
     else:
+        from sage.misc.superseded import deprecation
         deprecation(17234,'use tmp_filename instead')
         return tmp_filename(ext=ext)
 
diff --git a/src/sage/modules/all.py b/src/sage/modules/all.py
index c9c418169d6..ac1e32769e4 100644
--- a/src/sage/modules/all.py
+++ b/src/sage/modules/all.py
@@ -25,9 +25,6 @@
 from .vector_space_morphism import linear_transformation
 
 from sage.misc.lazy_import import lazy_import
-lazy_import("sage.modules",
-        ("vector_symbolic_dense",  "vector_callable_symbolic_dense"),
-        deprecation=18140)
 
 lazy_import('sage.modules.filtered_vector_space', 'FilteredVectorSpace')
 lazy_import('sage.modules.multi_filtered_vector_space', 'MultiFilteredVectorSpace')
diff --git a/src/sage/plot/graphics.py b/src/sage/plot/graphics.py
index c5a38e7c7bb..8e21923c2d6 100644
--- a/src/sage/plot/graphics.py
+++ b/src/sage/plot/graphics.py
@@ -1342,7 +1342,7 @@ def _set_scale(self, figure, scale=None, base=None):
                 labelspacing=0.02, loc='best',
                 markerscale=0.6, ncol=1, numpoints=2,
                 shadow=True, title=None)
-    def show(self, filename=None, linkmode=False, **kwds):
+    def show(self, **kwds):
         r"""
         Show this graphics image immediately.
 
@@ -2003,31 +2003,7 @@ def show(self, filename=None, linkmode=False, **kwds):
             ...
             ValueError: figsize should be a positive number or a list of two positive numbers, not [2, 3, 4]
             sage: P.show(figsize=[sqrt(2),sqrt(3)])
-
-        ::
-
-            sage: P = plot(x^2,(x,0,1))
-            sage: P.show(linkmode=True)
-            doctest:...: DeprecationWarning: the filename and linkmode arguments are deprecated, use save() to save
-            See http://trac.sagemath.org/17234 for details.
-            doctest:...: DeprecationWarning: use tmp_filename instead
-            See http://trac.sagemath.org/17234 for details.
-            "<img src='cell:///...png'>"
-        """
-        if filename or linkmode:
-            from sage.misc.superseded import deprecation
-            deprecation(17234,'the filename and linkmode arguments are deprecated, '
-                        'use save() to save')
-            if filename is None:
-                from sage.misc.temporary_file import graphics_filename
-                filename = graphics_filename()
-            self.save(filename, **kwds)
-            if linkmode:
-                return "<img src='cell://%s'>" % filename
-            else:
-                html("<img src='cell://%s'>" % filename)
-                return
-
+        """
         from sage.repl.rich_output import get_display_manager
         dm = get_display_manager()
         dm.display_immediately(self, **kwds)
@@ -3078,7 +3054,7 @@ def save_image(self, filename=None, *args, **kwds):
                 labelspacing=0.02, loc='best',
                 markerscale=0.6, ncol=1, numpoints=2,
                 shadow=True, title=None)
-    def save(self, filename=None, **kwds):
+    def save(self, filename, **kwds):
         r"""
         Save the graphics to an image file.
 
@@ -3172,11 +3148,6 @@ def save(self, filename=None, **kwds):
         transparent = options.pop('transparent')
         fig_tight = options.pop('fig_tight')
 
-        if filename is None:
-            from sage.misc.superseded import deprecation
-            deprecation(17234,'the filename argument is now mandatory')
-            from sage.misc.temporary_file import graphics_filename
-            filename = graphics_filename()
         ext = os.path.splitext(filename)[1].lower()
 
         if ext not in ALLOWED_EXTENSIONS:
@@ -3591,7 +3562,7 @@ def append(self, g):
         # Not clear if there is a way to do this
         raise NotImplementedError('Appending to a graphics array is not yet implemented')
 
-    def save(self, filename=None, dpi=DEFAULT_DPI, figsize=None, axes=None,
+    def save(self, filename, dpi=DEFAULT_DPI, figsize=None, axes=None,
              **kwds):
         r"""
         Save the graphics array.
@@ -3636,11 +3607,6 @@ def save(self, filename=None, dpi=DEFAULT_DPI, figsize=None, axes=None,
         """
         if figsize is not None:
             self._set_figsize_(figsize)
-        if filename is None:
-            from sage.misc.superseded import deprecation
-            deprecation(17234,'the filename argument is now mandatory')
-            from sage.misc.temporary_file import graphics_filename
-            filename = graphics_filename()
 
         #glist is a list of Graphics objects:
         glist = self._glist
diff --git a/src/sage/repl/load.py b/src/sage/repl/load.py
index 491746fa03d..bf770b7a164 100644
--- a/src/sage/repl/load.py
+++ b/src/sage/repl/load.py
@@ -195,54 +195,11 @@ def load(filename, globals, attach=False):
         Traceback (most recent call last):
         ...
         IOError: did not find file 'this file should not exist' to load or attach
-
-    Evaluating a filename is deprecated::
-
-        sage: sage.repl.load.load("tmp_filename(ext='.py')", globals())
-        doctest:...: DeprecationWarning: using unevaluated expressions as argument to load() is dangerous and deprecated
-        See http://trac.sagemath.org/17654 for details.
-
-    Test filenames separated by spaces (deprecated)::
-
-        sage: t = tmp_filename(ext='.py')
-        sage: with open(t, 'w') as f:
-        ....:     f.write("print 'hello'\n")
-        sage: sage.repl.load.load(t + " " + t, globals())
-        hello
-        hello
-        doctest:...: DeprecationWarning: using multiple filenames separated by spaces as load() argument is dangerous and deprecated
-        See http://trac.sagemath.org/17654 for details.
     """
     if attach:
         from sage.repl.attach import add_attached_file
 
     filename = os.path.expanduser(filename)
-    if not os.path.exists(filename):
-        try:
-            # Try *evaluating* the filename
-            filename = eval(filename, globals).strip()
-        except Exception:
-            # Handle multiple input files separated by spaces, which was
-            # maybe a bad idea, but which we have to handle for backwards
-            # compatibility.
-            v = filename.split()
-            if len(v) > 1:
-                try:
-                    for f in v:
-                        load(f, globals, attach=attach)
-                except IOError:
-                    # Splitting the filename didn't work, pretend it
-                    # didn't happen :-)
-                    pass
-                else:
-                    # Only show deprecation message if the filename
-                    # splitting worked.
-                    from sage.misc.superseded import deprecation
-                    deprecation(17654, 'using multiple filenames separated by spaces as load() argument is dangerous and deprecated')
-                    return
-        else:
-            from sage.misc.superseded import deprecation
-            deprecation(17654, 'using unevaluated expressions as argument to load() is dangerous and deprecated')
 
     if filename.lower().startswith(('http://', 'https://')):
         if attach:
diff --git a/src/sage/structure/coerce.pyx b/src/sage/structure/coerce.pyx
index c30527835db..8b1cddace26 100644
--- a/src/sage/structure/coerce.pyx
+++ b/src/sage/structure/coerce.pyx
@@ -94,9 +94,6 @@ from sage.categories.map cimport Map
 from sage.categories.morphism import IdentityMorphism
 from sage.categories.action cimport Action, InverseAction, PrecomposedAction
 
-from sage.misc.lazy_import import LazyImport
-parent = LazyImport('sage.structure.all', 'parent', deprecation=17533)
-
 import traceback