test rename overhaul: step 8 - language tests

tests/language/src/Operator2NegativeTest.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-// Operator dart test program (=== cannot have an operator function).
-
-class Helper {
-  int i;
-  Helper(int val) : i = val { }
-  operator ===(int index) {
-    return index;
-  }
-}
-
-class Operator2NegativeTest {
-  static testMain() {
-    Helper obj = new Helper(10);
-  }
-}
-
-main() {
-  Operator2NegativeTest.testMain();
-}