Have the bitcode reader/writer just use FPMathOperator's fast math enum directly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169710 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Bitcode/LLVMBitCodes.h

@@ -242,16 +242,6 @@ namespace bitc {
     PEO_EXACT = 0
   };
 
-  /// Flags for serializing FPMathOperator's
-  /// SubclassOptionalData contents.
-  enum FastMathFlags {
-    FMF_UNSAFE_ALGEBRA   = 0,
-    FMF_NO_NANS          = 1,
-    FMF_NO_INFS          = 2,
-    FMF_NO_SIGNED_ZEROS  = 3,
-    FMF_ALLOW_RECIPROCAL = 4
-  };
-
   /// Encoded AtomicOrdering values.
   enum AtomicOrderingCodes {
     ORDERING_NOTATOMIC = 0,