Revert 374481 "[tsan,msan] Insert module constructors in a module pass"

CodeGen/sanitizer-module-constructor.c fails on mac and windows, see e.g.
http://lab.llvm.org:8011/builders/clang-x64-windows-msvc/builds/11424

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@374503 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed