Revert "[InstCombine] New opportunities for FoldAndOfICmp and FoldXorOfICmp"

This reverts commit r289813, it caused PR31449.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@290266 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed