Revert "[mips][microMIPS] Extending size reduction pass with ADDIUSP and ADDIUR1SP"

This reverts commit r305455. This commit was reported as breaking one of
the sanitizer buildbots. Reverting until lab.llvm.org comes back online.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305557 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed