Remove dead code for system VK.

ui/keyboard/resources/elements/kb-shift-key.html

Index: ui/keyboard/resources/elements/kb-shift-key.html
diff --git a/ui/keyboard/resources/elements/kb-shift-key.html b/ui/keyboard/resources/elements/kb-shift-key.html
deleted file mode 100644
index dca707af116ccb5491a8580e49a9e383f614e9c0..0000000000000000000000000000000000000000
--- a/ui/keyboard/resources/elements/kb-shift-key.html
+++ /dev/null
@@ -1,35 +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-shift-key" attributes="lowerCaseKeysetId
-    upperCaseKeysetId" class="shift dark" char="Shift" image="shift.png"
-    on-pointerout="{{out}}" extends="kb-key">
-  <template>
-    <style>
-      .shift-light-wrapper {
-        top: 6px;
-        height: 10%;
-        margin: 0;
-        padding: 0;
-        position: absolute;
-        width: 100%;
-      }
-
-      .shift-light {
-        background-color: #cccccc;
-        border: none;
-        height: 4px;
-        margin: 0 6px 0 auto;
-        position: relative;
-        width: 4px;
-      }
-    </style>
-    <div class="shift-light-wrapper">
-      <div class="shift-light"> </div>
-    </div>
-    <shadow></shadow>
-  </template>
-</polymer-element>