[mips] Cleanup old floating-point flag conditions definitions. NFC.

Reviewers: dsanders

Differential Revision: http://reviews.llvm.org/D7947

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235377 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed