Revert r304929 since the test broke buildbots.

Original commit:

  [mips] Add runtime options to enable/disable madd.fmt and msub.fmt

  Add options to clang: -mmadd4 and -mno-madd4, use it to enable or disable
  generation of madd.fmt and similar instructions respectively, as per GCC.

  Patch by Stefan Maksimovic.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@304935 91177308-0d34-0410-b5e6-96231b3b80d8