Revert r330755 "[lit] Report line number for failed RUN command"

It is causing many tests to fail on Windows buildbots:
http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/10211

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330848 91177308-0d34-0410-b5e6-96231b3b80d8
16 files changed