Remove implementation of Panels on OSes other than ChromeOS.

chrome/test/data/panels/basic/test.js

Index: chrome/test/data/panels/basic/test.js
diff --git a/chrome/test/data/panels/basic/test.js b/chrome/test/data/panels/basic/test.js
deleted file mode 100644
index f30fcbdca80f8c1028b9fe16c35808f4d00a7af2..0000000000000000000000000000000000000000
--- a/chrome/test/data/panels/basic/test.js
+++ /dev/null
@@ -1,6 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-chrome.windows.create({'url': 'panel.html', 'type': 'panel'},
-                      function() {});