Remove unused command_update keybinding test data

chrome/test/data/extensions/api_test/keybinding/command_update/background.js

Index: chrome/test/data/extensions/api_test/keybinding/command_update/background.js
diff --git a/chrome/test/data/extensions/api_test/keybinding/command_update/background.js b/chrome/test/data/extensions/api_test/keybinding/command_update/background.js
deleted file mode 100644
index d9f9e381b4ef7413d406117d0506010391a3a0fa..0000000000000000000000000000000000000000
--- a/chrome/test/data/extensions/api_test/keybinding/command_update/background.js
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2013 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.commands.onCommand.addListener(function(command) {
-  if (command == "command_B") {
-    chrome.test.notifyPass();
-    return;
-  }
-
-  // Everything else is a failure case.
-  chrome.test.notifyFail("Unexpected command received: " + command);
-});
-
-chrome.test.notifyPass();