Remove clang_isFromMainFile().  It doesn't work correctly with CXDiagnostics, and we shouldn't
have an API around that cannot be implemented correctly yet.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104849 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed