Revert "Try to correct a mistyped "-" or ">" to "->" for some C++ cases."

Revert this patch until cases of rejected valid code (e.g. identifiers
that require ADL to be resolved properly) are fixed.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@194088 91177308-0d34-0410-b5e6-96231b3b80d8