Delete pop-pop-win from the repo

samples/pop_pop_win/lib/src/audio.dart

-// Copyright (c) 2014, 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 pop_pop_win.audio;
-
-import 'dart:math';
-
-import 'package:stagexl/stagexl.dart';
-
-class GameAudio {
-  static final Random _rnd = new Random();
-
-  static ResourceManager _resourceManager;
-
-  static const String _WIN = 'win',
-      _CLICK = 'click',
-      _POP = 'Pop',
-      _FLAG = 'flag',
-      _UNFLAG = 'unflag',
-      _BOMB = 'Bomb',
-      _THROW_DART = 'throw';
-
-  static void initialize(ResourceManager resourceManager) {
-    if (_resourceManager != null) throw new StateError('already initialized');
-    _resourceManager = resourceManager;
-  }
-
-  static void win() => _playAudio(_WIN);
-
-  static void click() => _playAudio(_CLICK);
-
-  static void pop() => _playAudio(_POP);
-
-  static void flag() => _playAudio(_FLAG);
-
-  static void unflag() => _playAudio(_UNFLAG);
-
-  static void bomb() => _playAudio(_BOMB);
-
-  static void throwDart() => _playAudio(_THROW_DART);
-
-  static void _playAudio(String name) {
-    if (_resourceManager == null) throw new StateError('Not initialized');
-    switch (name) {
-      case GameAudio._POP:
-        var i = _rnd.nextInt(8);
-        name = '${GameAudio._POP}$i';
-        break;
-      case GameAudio._BOMB:
-        var i = _rnd.nextInt(4);
-        name = '${GameAudio._BOMB}$i';
-        break;
-    }
-    _resourceManager.getSoundSprite('audio').play(name);
-  }
-}