remove unneccessary supress warnings

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/BuiltinFunctions.java

@@ -507,7 +507,7 @@ private Object evalExpression(String expression, PythonObject globals, PythonObj
          * @param locals TODO: support the locals dictionary in execution
          */
         @TruffleBoundary
-        private static Object evalNode(RootNode root, PythonObject globals, @SuppressWarnings("unused") PythonObject locals, PCell[] closure) {
+        private static Object evalNode(RootNode root, PythonObject globals, PythonObject locals, PCell[] closure) {
             Object[] args = PArguments.create();
             PArguments.setGlobals(args, globals);
             PArguments.setClosure(args, closure);