Remove little semicolon that caused a lot of warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157684 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/CodeGenRegisters.h

@@ -564,7 +564,7 @@ namespace llvm {
 
     unsigned getNumNativeRegUnits() const {
       return NumNativeRegUnits;
-    };
+    }
 
     RegUnit &getRegUnit(unsigned RUID) { return RegUnits[RUID]; }
     const RegUnit &getRegUnit(unsigned RUID) const { return RegUnits[RUID]; }