Revert [SCEV] Make isLoopEntryGuardedByCond a bit smarter

Revert rL324453 commit which causes buildbot failures.

Differential Revision: https://reviews.llvm.org/D42835


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324462 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed