Remove deprecated members from this repo.

lib/html_enhanced_config.dart

Index: lib/html_enhanced_config.dart
diff --git a/lib/html_enhanced_config.dart b/lib/html_enhanced_config.dart
deleted file mode 100644
index fddab7cb97cbc57ec8aeaa14787a29ff03ef9d3f..0000000000000000000000000000000000000000
--- a/lib/html_enhanced_config.dart
+++ /dev/null
@@ -1,21 +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.
-
-@deprecated
-library test.html_enhanced_config;
-
-import 'src/deprecated/simple_configuration.dart';
-
-/// This is a stub class used to preserve compatibility with unittest 0.11.*.
-///
-/// It will be removed before the next version is released.
-@deprecated
-class HtmlEnhancedConfiguration extends SimpleConfiguration {
-  HtmlEnhancedConfiguration(bool isLayoutTest);
-
-  void processMessage(e) {}
-}
-
-@deprecated
-void useHtmlEnhancedConfiguration([bool isLayoutTest]) {}