Revert "[InstCombine] Enable cast-folding in logic(cast(icmp), cast(icmp))"

Makes InstCombine infloop when compiling v8.

This reverts commit r275989 and r276105.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276106 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed