Revert "ThinLTO: Verify bitcode before lauching the ThinLTOCodeGenerator."

This reverts commit r303438 while deliberating buildbot breakage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303467 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed