MD Settings: Remove remnants of obsolete Full Screen top-level category.

chrome/browser/resources/settings/privacy_page/privacy_page.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="/clear_browsing_data_dialog/clear_browsing_data_dialog.html">
 <link rel="import" href="/controls/settings_checkbox.html">
 <link rel="import" href="/settings_main/settings_main_rendered.html">
 <link rel="import" href="/settings_page/settings_animated_pages.html">
 <link rel="import" href="/settings_page/settings_subpage.html">
 <link rel="import" href="/settings_shared_css.html">
@@ skipping 157 matching lines @@
               <settings-checkbox class="start"
                   label="$i18n{thirdPartyCookie}"
                   sub-label="$i18n{thirdPartyCookieSublabel}"
                   pref="{{prefs.profile.block_third_party_cookies}}">
               </settings-checkbox>
             </div>
             <site-data class="site-data"></site-data>
           </site-settings-category>
         </settings-subpage>
       </template>
-      <template is="dom-if" name="site-settings-category-fullscreen">
-        <settings-subpage
-            page-title="$i18n{siteSettingsCategoryFullscreen}">
-          <site-settings-category
-              selected-site="{{selectedSite}}"
-              current-route="{{currentRoute}}"
-              category="{{ContentSettingsTypes.FULLSCREEN}}">
-          </site-settings-category>
-        </settings-subpage>
-      </template>
       <template is="dom-if" name="site-settings-category-images">
         <settings-subpage page-title="$i18n{siteSettingsCategoryImages}">
           <site-settings-category
               selected-site="{{selectedSite}}"
               current-route="{{currentRoute}}"
               category="{{ContentSettingsTypes.IMAGES}}">
           </site-settings-category>
         </settings-subpage>
       </template>
       <template is="dom-if" name="site-settings-category-location">
@@ skipping 81 matching lines @@
       <template is="dom-if" name="site-details">
         <settings-subpage
             page-title="$i18n{siteSettingsSiteDetailsPageTitle}">
           <site-details site="[[selectedSite]]"></site-details>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="privacy_page.js"></script>
 </dom-module>