Revert [SimplifyCFG] Relax restriction for folding unconditional branches

The patch causes the failure of the test
compiler-rt/test/profile/Linux/counter_promo_nest.c

To unblock buildbot, revert the patch while investigation is in progress.

Differential Revision: https://reviews.llvm.org/D42691


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324214 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed