Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

This reverts commit r293184 which is failing in LTO builds

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293188 91177308-0d34-0410-b5e6-96231b3b80d8
71 files changed