[cros,rlz] Remove RLZ checkbox from OOBE UI.

chrome/browser/resources/chromeos/login/oobe.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.
  *
  * This is the stylesheet used by the Out of the box experience (OOBE) flow,
  * sign in and lock screens.
  */
 
 html,
 body {
@@ skipping 1069 matching lines @@
 
 #tpm-busy {
   text-align: center;
 }
 
 #tpm-password {
   font-weight: bold;
   text-align: center;
 }
 
-html[rlz=disabled] #rlz-settings {
-  display: none;
-}
-
-#rlz-enable {
-  -webkit-margin-end: 10px;
-  -webkit-margin-start: 20px;
-}
-
 [hidden] {
   display: none !important;
 }
 
 #popup-overlay {
   -webkit-box-align: center;
   -webkit-box-pack: center;
   -webkit-transition: 250ms opacity;
   background: rgba(255, 255, 255, .75);
   bottom: 0;
@@ skipping 311 matching lines @@
   width: 100%;
 }
 
 .background-initial {
   opacity: 0;
 }
 
 .background-final {
   opacity: 1;
 }