Revert "Fixing SelectElement.selectedOptions to work across all platforms."

tests/html/selectelement_test.dart

-// Copyright (c) 2012, 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('selectelement_test');
-#import('../../pkg/unittest/unittest.dart');
-#import('../../pkg/unittest/html_config.dart');
-#import('dart:html');
-
-main() {
-  useHtmlConfiguration();
-
-  test('selectedOptions', () {
-    var element = new SelectElement();
-    var options = [
-      new OptionElement(),
-      new OptionElement('data', 'two', false, true),
-      new OptionElement('data', 'two', false, true),
-      new OptionElement(),
-    ];
-    element.elements.addAll(options);
-    expect(element.selectedOptions.length, 1);
-    expect(element.selectedOptions[0] == options[2]);
-  });
-
-  test('multiple selectedOptions', () {
-    var element = new SelectElement();
-    element.multiple = true;
-    var options = [
-      new OptionElement(),
-      new OptionElement('data', 'two', false, true),
-      new OptionElement('data', 'two', false, true),
-      new OptionElement(),
-    ];
-    element.elements.addAll(options);
-    expect(element.selectedOptions.length, 2);
-    expect(element.selectedOptions[0] == options[1]);
-    expect(element.selectedOptions[1] == options[2]);
-  });
-}