[SimplifyCFG] Regenerate preserve-branchweights.ll test. NFC

Regenerate this test using update_test_checks.py in preparation for an
upcomming commit, to make it not depend on the names of instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@346869 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed