DOMUI: Remove experimental sync promo layouts

chrome/browser/resources/sync_setup_overlay.html

 <div id="sync-setup-overlay" class="page" hidden>
   <div id="sync-setup-login" hidden>
     <div id="promo-title-container" hidden>
       <h1 i18n-content="promoTitle"></h1>
       <h2>
         <span i18n-content="promoTitleShort"></span>
         <a id="promo-learn-more" i18n-content="promoLearnMore"
             i18n-values="href:promoLearnMoreURL">
         </a>
       </h2>
     </div>
-    <div class="signup-header-bar" hidden>
-      <div class="logo"></div>
-      <a class="signup" i18n-values="href:signUpURL"
-          i18n-content="promoVerboseSignUp"></a>
-    </div>
     <div class="sync-main-content">
       <div id="sync-setup-login-content-column">
         <div class="close-button"></div>
         <h1 id="sync-setup-overlay-title" i18n-content="syncSetupOverlay"></h1>
         <div class="sign-in">
           <div id="top-blurb-error" class="reset-hidden" hidden>
             <span id="error-signing-in" i18n-content="errorSigningIn"></span>
             <span id="error-custom" hidden></span>
           </div>
           <div class="signin-box">
@@ skipping 95 matching lines @@
             </button>
           </div>
         </div>
         <div id="promo-skip" hidden>
           <button id="promo-skip-button" type="reset"
               i18n-content="promoSkipButton" class="link-button"></button>
           <button id="promo-advanced" i18n-content="promoAdvanced"
               class="link-button"></button>
         </div>
       </div>
-      <div id="sync-setup-login-promo-column" hidden>
-        <div id="sync-setup-login-promo-column-0" hidden>
-          <h2 i18n-content="promoMessageTitle"></h2>
-          <p>
-            <span i18n-values=".innerHTML:promoMessageBody"></span>
-            <a id="promo-learn-more-show" i18n-content="promoLearnMoreShow"
-                href="#" tabindex="1"></a>
-            <a id="promo-learn-more-hide" i18n-content="promoLearnMoreHide"
-                href="#" tabindex="1" hidden> </a>
-          </p>
-          <div id="promo-info-pane">
-            <div id="promo-infographic"></div>
-            <div id="promo-information"
-                i18n-values=".innerHTML:promoInformation" hidden>
-            </div>
-          </div>
-        </div>
-        <div id="sync-setup-login-promo-column-1" hidden>
-          <div id="promo-infographic-1"></div>
-        </div>
-        <div id="sync-setup-login-promo-column-2" hidden>
-          <h2 i18n-content="promoVerboseTitle"></h2>
-          <p i18n-content="promoVerboseMessageBody"></p>
-          <ul class="features">
-            <li>
-              <div id="features-sync-logo" class="feature-logo"></div>
-              <h3 i18n-content="promoVerboseSyncTitle"></h3>
-              <p i18n-content="promoVerboseSyncBody"></p>
-            </li>
-            <li>
-              <div id="features-sync-backup-logo" class="feature-logo"></div>
-              <h3 i18n-content="promoVerboseBackupTitle"></h3>
-              <p i18n-content="promoVerboseBackupBody"></p>
-            </li>
-            <li>
-              <div id="features-google-mail-logo" class="feature-logo"></div>
-              <h3 i18n-content="promoVerboseServicesTitle"></h3>
-              <p i18n-content="promoVerboseServicesBody"></p>
-            </li>
-          </ul>
-          <span i18n-values=".innerHTML:promoVerboseLearnMore"></span>
-        </div>
-      </div>
     </div>
   </div>
   <div id="sync-setup-configure" hidden>
     <div id="confirm-sync-preferences">
       <h1 i18n-content="confirmSyncPreferences"></h1>
       <div id="sync-instructions-container" class="content-area">
         <span i18n-content="chooseDataTypesInstructions"></span>
         <a id="encryption-help-link" target="_blank"
             i18n-values="href:syncEverythingHelpURL" i18n-content="learnMore">
         </a>
@@ skipping 212 matching lines @@
       <span i18n-values=".innerHTML:stopSyncingExplanation"></span>
     </div>
     <div class="action-area button-strip">
       <input id="stop-syncing-cancel" type="button"
           i18n-values="value:cancel">
       <input id="stop-syncing-ok" type="button"
           i18n-values="value:stopSyncingConfirm">
     </div>
   </div>
 </div>