Removes the 'launcher' grey bar from display pref.

chrome/browser/resources/options/chromeos/display_options.css

 /* Copyright (c) 2012 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. */
 
 #display-options-page {
   background-color: rgb(240, 240, 240);
 }
 
 #display-options-content-area {
   padding: 0;
@@ skipping 51 matching lines @@
 }
 
 html[dir=rtl] #selected-display-data-container {
   float: right;
 }
 
 #selected-display-name {
   font-weight: bold;
 }
 
-#display-launcher {
-  background-color: lightgrey;
-  bottom: 0;
-  height: 10px;
-  position: absolute;
-}
-
 .displays-display {
   -webkit-user-select: none;
   background: rgb(240, 240, 240);
   border: solid 1px;
   font-weight: bold;
   position: absolute;
   text-align: center;
   z-index: 2;
 }
 
 .display-mirrored {
   border: solid 1px;
 }
 
 .displays-focused {
   border: solid 2px rgb(0, 138, 255);
   color: rgb(0, 138, 255);
 }
 
 .display-options-single-button-container {
   padding: 5px 0;
 }
 
 .display-options-button {
   width: 120px;
 }