Remove two unused #ifdefs.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194983 91177308-0d34-0410-b5e6-96231b3b80d8
Remove method that always returns true.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194984 91177308-0d34-0410-b5e6-96231b3b80d8