Revert "[AArch64] Improve load/store optimizer to handle LDUR + LDR (take 3)."

This reverts commit r259812 as it broke AArch64 self-hosting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259881 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed