[X86] Remove icmp undef from reduced tests

Pre-commit for D59363 (Add icmp UNDEF handling to SelectionDAG::FoldSetCC)

Approved by @spatel (Sanjay Patel)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356859 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed