Delete pop-pop-win from the repo

samples/pop_pop_win/lib/src/stage/board_element.dart

Index: samples/pop_pop_win/lib/src/stage/board_element.dart
diff --git a/samples/pop_pop_win/lib/src/stage/board_element.dart b/samples/pop_pop_win/lib/src/stage/board_element.dart
deleted file mode 100644
index 18f6ba150683b39968cf1080a7412e04b1eed785..0000000000000000000000000000000000000000
--- a/samples/pop_pop_win/lib/src/stage/board_element.dart
+++ /dev/null
@@ -1,46 +0,0 @@
-// 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.stage.board_element;
-
-import 'package:bot/bot.dart' show Array2d;
-import 'package:stagexl/stagexl.dart';
-
-import 'package:pop_pop_win/src/game.dart';
-import 'game_element.dart';
-import 'square_element.dart';
-
-class BoardElement extends Sprite {
-  Array2d<SquareElement> _elements;
-
-  BoardElement(GameElement gameElement) {
-    addTo(gameElement);
-
-    _elements = new Array2d<SquareElement>(game.field.width, game.field.height);
-
-    num scaledSize = SquareElement.SIZE * _boardScale;
-    for (int i = 0; i < _elements.length; i++) {
-      var coords = _elements.getCoordinate(i);
-      var se = new SquareElement(coords.item1, coords.item2)
-          ..x = coords.item1 * scaledSize
-          ..y = coords.item2 * scaledSize
-          ..scaleX = _boardScale
-          ..scaleY = _boardScale
-          ..addTo(this);
-
-      _elements[i] = se;
-      se.updateState();
-    }
-
-  }
-
-  GameElement get gameElement => parent;
-  num get _boardScale => gameElement.boardScale;
-  num get _boardSize => gameElement.boardSize;
-  Array2d<SquareElement> get squares => _elements;
-  Game get game => gameElement.game;
-  Stage get _stage => gameElement.manager.stage;
-
-  TextureAtlas get opaqueAtlas =>
-      gameElement.resourceManager.getTextureAtlas('opaque');
-}