Revert rL309320 - "[OCaml] Respect CMAKE_C_FLAGS for OCaml C files"

This causes buildbot breakage for systems where OCaml files are built
with a different compiler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309364 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed