[MD Bookmarks] Remove the bookmarks-sidebar element.

chrome/browser/resources/md_bookmarks/sidebar.js

Index: chrome/browser/resources/md_bookmarks/sidebar.js
diff --git a/chrome/browser/resources/md_bookmarks/sidebar.js b/chrome/browser/resources/md_bookmarks/sidebar.js
deleted file mode 100644
index d704a9a181475de6ebddf835657e8e8836b059cd..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/md_bookmarks/sidebar.js
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2016 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({
-  is: 'bookmarks-sidebar',
-
-  behaviors: [
-    bookmarks.StoreClient,
-  ],
-
-  properties: {
-    /** @type {Array<string>} */
-    rootFolders: Array,
-  },
-
-  attached: function() {
-    this.watch('rootFolders', function(store) {
-      return store.nodes['0'].children;
-    });
-    this.updateFromStore();
-  },
-});