Fixed warning

Author: ncave

src/fsharp/infos.fs

@@ -1595,9 +1595,6 @@ type ILFieldInfo =
 #if EXTENSIONTYPING
         | ProvidedField(_,fi1,_), ProvidedField(_,fi2,_)-> ProvidedFieldInfo.TaintedEquals (fi1, fi2) 
 #endif
-#if !FABLE_COMPILER
-        | _ -> false
-#endif
 
      /// Get an (uninstantiated) reference to the field as an Abstract IL ILFieldRef
     member x.ILFieldRef = rescopeILFieldRef x.ScopeRef (mkILFieldRef(x.ILTypeRef,x.FieldName,x.ILFieldType))