chore: cleanup and fix some bzl_library deps in //python/private (#2381)

After the move out of `python/private/common`, some dep entries didn't
get renamed
to use the idiomatic local naming (`:foo`) instead of absolute names.

Along the way, add a missing dep entry to py_runtime_rule on skylib's
common_settings.

python/private/BUILD.bazel

@@ -56,13 +56,13 @@ bzl_library(
     srcs = ["attributes.bzl"],
     deps = [
         ":common_bzl",
+        ":enum_bzl",
+        ":flags_bzl",
+        ":py_info_bzl",
         ":py_internal_bzl",
+        ":reexports_bzl",
+        ":rules_cc_srcs_bzl",
         ":semantics_bzl",
-        "//python/private:enum_bzl",
-        "//python/private:flags_bzl",
-        "//python/private:py_info_bzl",
-        "//python/private:reexports_bzl",
-        "//python/private:rules_cc_srcs_bzl",
         "@bazel_skylib//rules:common_settings",
     ],
 )
@@ -109,10 +109,10 @@ bzl_library(
     deps = [
         ":attributes_bzl",
         ":common_bzl",
+        ":py_cc_link_params_info_bzl",
         ":py_internal_bzl",
-        "//python/private:py_cc_link_params_info_bzl",
-        "//python/private:py_interpreter_program_bzl",
-        "//python/private:toolchain_types_bzl",
+        ":py_interpreter_program_bzl",
+        ":toolchain_types_bzl",
         "@bazel_skylib//lib:paths",
     ],
 )
@@ -122,11 +122,11 @@ bzl_library(
     srcs = ["common.bzl"],
     deps = [
         ":cc_helper_bzl",
+        ":py_info_bzl",
         ":py_internal_bzl",
+        ":reexports_bzl",
+        ":rules_cc_srcs_bzl",
         ":semantics_bzl",
-        "//python/private:py_info_bzl",
-        "//python/private:reexports_bzl",
-        "//python/private:rules_cc_srcs_bzl",
     ],
 )
 
@@ -350,8 +350,8 @@ bzl_library(
         ":common_bzl",
         ":py_executable_bzl",
         ":py_internal_bzl",
+        ":py_runtime_info_bzl",
         ":semantics_bzl",
-        "//python/private:py_runtime_info_bzl",
     ],
 )
 
@@ -362,14 +362,14 @@ bzl_library(
         ":attributes_bzl",
         ":cc_helper_bzl",
         ":common_bzl",
+        ":flags_bzl",
+        ":py_cc_link_params_info_bzl",
+        ":py_executable_info_bzl",
+        ":py_info_bzl",
         ":py_internal_bzl",
-        "//python/private:flags_bzl",
-        "//python/private:py_cc_link_params_info_bzl",
-        "//python/private:py_executable_info_bzl",
-        "//python/private:py_info_bzl",
-        "//python/private:py_runtime_info_bzl",
-        "//python/private:rules_cc_srcs_bzl",
-        "//python/private:toolchain_types_bzl",
+        ":py_runtime_info_bzl",
+        ":rules_cc_srcs_bzl",
+        ":toolchain_types_bzl",
         "@bazel_skylib//lib:dicts",
         "@bazel_skylib//lib:structs",
         "@bazel_skylib//rules:common_settings",
@@ -410,10 +410,10 @@ bzl_library(
     deps = [
         ":attributes_bzl",
         ":common_bzl",
+        ":flags_bzl",
+        ":py_cc_link_params_info_bzl",
         ":py_internal_bzl",
-        "//python/private:flags_bzl",
-        "//python/private:py_cc_link_params_info_bzl",
-        "//python/private:toolchain_types_bzl",
+        ":toolchain_types_bzl",
         "@bazel_skylib//lib:dicts",
         "@bazel_skylib//rules:common_settings",
     ],
@@ -473,13 +473,14 @@ bzl_library(
     name = "py_runtime_rule_bzl",
     srcs = ["py_runtime_rule.bzl"],
     deps = [
+        ":attributes_bzl",
+        ":py_internal_bzl",
         ":py_runtime_info_bzl",
         ":reexports_bzl",
         ":util_bzl",
-        "//python/private:attributes_bzl",
-        "//python/private:py_internal_bzl",
         "@bazel_skylib//lib:dicts",
         "@bazel_skylib//lib:paths",
+        "@bazel_skylib//rules:common_settings",
     ],
 )