Delete pop-pop-win from the repo

samples/pop_pop_win/web/game_web.dart

Index: samples/pop_pop_win/web/game_web.dart
diff --git a/samples/pop_pop_win/web/game_web.dart b/samples/pop_pop_win/web/game_web.dart
deleted file mode 100644
index fc287491ad5f29284f153db230883217a3e651c2..0000000000000000000000000000000000000000
--- a/samples/pop_pop_win/web/game_web.dart
+++ /dev/null
@@ -1,11 +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.game_web;
-
-import 'platform_web.dart';
-import 'package:pop_pop_win/pop_pop_win.dart';
-
-void main() {
-  startGame(new PlatformWeb());
-}