Revert "Pkg: explain why rm is noop when attempting to remove a packa…

…ge that is dependency"

This reverts commit d5750f7.

base/pkg.jl

@@ -21,18 +21,14 @@ add(pkg::String, vers::VersionNumber...) = add(pkg, VersionSet(vers...))
 init(meta::String=Dir.DEFAULT_META) = Dir.init(meta)
 
 edit(f::Function, pkg, args...) = Dir.cd() do
-    msg = ""
     r = Reqs.read("REQUIRE")
     reqs = Reqs.parse(r)
     avail = Read.available()
     if !haskey(avail,pkg) && !haskey(reqs,pkg)
         error("unknown package $pkg")
     end
     r_ = f(r,pkg,args...)
-    r_ == r && begin
-        if (f == Reqs.rm) msg = " Cannot remove yet: $pkg is required by installed package." end
-        return info("Nothing to be done.$msg")
-        end
+    r_ == r && return info("Nothing to be done.")
     reqs_ = Reqs.parse(r_)
     reqs_ != reqs && _resolve(reqs_,avail)
     Reqs.write("REQUIRE",r_)
@@ -366,4 +362,4 @@ end
 fixup() = Dir.cd(_fixup)
 fixup(pkg) = Dir.cd(()->_fixup(pkg))
 
-end # module
+end # module