Revert "[OptRemarks] Add library for parsing optimization remarks"

This reverts commit 1cc98e6672b6319fdb00b70dd4474aabdadbe193.

Seems to break bots: http://lab.llvm.org:8011/builders/clang-x86_64-linux-abi-test/builds/33398/steps/build-unified-tree/logs/stdio

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@344164 91177308-0d34-0410-b5e6-96231b3b80d8
11 files changed