Remove dead code for system VK.

ui/keyboard/resources/keyboard.js

Index: ui/keyboard/resources/keyboard.js
diff --git a/ui/keyboard/resources/keyboard.js b/ui/keyboard/resources/keyboard.js
deleted file mode 100644
index 60527521855020626f74ffe2d58a1c51e4d36c8e..0000000000000000000000000000000000000000
--- a/ui/keyboard/resources/keyboard.js
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2014 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.
-<include src="constants.js">
-<include src="api_adapter.js">
-<include src="touch_fuzzing.js">
-<include src="voice_input.js">
-<include src="main.js">
-//TODO(kevers): Dynamically load alternative keys based on locale.
-<include src="layouts/latin-accents.js">
-<include src="layouts/symbol-altkeys.js">
-<include src="elements/kb-altkey-container.js">
-<include src="elements/kb-altkey-set.js">
-<include src="elements/kb-key-codes.js">
-<include src="elements/kb-key-sequence.js">
-<include src="elements/kb-altkey-data.js">
-<include src="elements/kb-key-base.js">
-<include src="elements/kb-key.js">
-<include src="elements/kb-keyset.js">
-<include src="elements/kb-row.js">
-<include src="elements/kb-altkey.js">
-<include src="elements/kb-keyboard.js">
-<include src="elements/kb-key-import.js">
-<include src="elements/kb-modifier-key.js">
-<include src="elements/kb-shift-key.js">