Remove the old predefines-buffer diffing code completely. It's been
replaced by the more efficient, cleaner preprocessor-option version
that occurs earlier in PCH validation.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166654 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed