Remove deprecated members from this repo.

lib/vm_config.dart

-// 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.vm_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 VMConfiguration extends SimpleConfiguration {
-  final String GREEN_COLOR = '\u001b[32m';
-  final String RED_COLOR = '\u001b[31m';
-  final String MAGENTA_COLOR = '\u001b[35m';
-  final String NO_COLOR = '\u001b[0m';
-
-  bool useColor = false;
-
-  VMConfiguration() : super();
-}
-
-@deprecated
-void useVMConfiguration() {}