Revert "Fixing CharacterData.remove not working on FireFox."

tests/html/cdata_test.dart

Index: tests/html/cdata_test.dart
diff --git a/tests/html/cdata_test.dart b/tests/html/cdata_test.dart
deleted file mode 100644
index 928cf3817f071b77d60b4e9dbc9ec9bad7d76b91..0000000000000000000000000000000000000000
--- a/tests/html/cdata_test.dart
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright (c) 2013, 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
-
-library cdata_test;
-import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
-import 'dart:html';
-
-
-main() {
-  test('remove', () {
-    var div = new Element.html('<div>content</div>');
-    var cdata = div.nodes[0];
-    expect(cdata is CharacterData, true);
-    expect(cdata, isNotNull);
-    expect(div.innerHtml, 'content');
-
-    cdata.remove();
-    expect(div.innerHtml, '');
-  });
-}