Remove dead code for system VK.

ui/keyboard/resources/elements/kb-keyset.html

Index: ui/keyboard/resources/elements/kb-keyset.html
diff --git a/ui/keyboard/resources/elements/kb-keyset.html b/ui/keyboard/resources/elements/kb-keyset.html
deleted file mode 100644
index 9494064288427583aac6fb4cfbe697a9462962aa..0000000000000000000000000000000000000000
--- a/ui/keyboard/resources/elements/kb-keyset.html
+++ /dev/null
@@ -1,21 +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.
-  -->
-
-<polymer-element name="kb-keyset" attributes="align flick isDefault nextKeyset
-    pitch weightRight weightTop weightBottom" on-key-up="{{keyUp}}"
-    on-key-longpress="{{keyLongpress}}">
-  <template>
-    <style>
-      :host(:not(.activeKeyset)) {
-        display: none;
-      }
-    </style>
-    <content select="kb-row"></content>
-    <content select="kb-altkey-container" id="altkeyContainer"
-        touch-action="none"></content>
-    <kb-altkey-data id="altkeyMetadata"></kb-altkey-data>
-  </template>
-</polymer-element>