[llvm-mca] Revert r340659. NFC.

Choosing to revert the change and do it again, hopefully preserving the history
of the changes by using svn copy instead of simply creating a new file from the
contents within Scheduler.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340661 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed