Remove old webui History page on desktop and mobile

ios/chrome/app/strings/ios_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definition of resources that will be translated for each
 locale.  The strings in this file are specific to iOS.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
@@ skipping 656 matching lines @@
       </message>
       <message name="IDS_IOS_HISTORY_NO_SYNCED_RESULTS" desc="The notification at the top of the history page indicating that it does not include visits from other devices.">
         Showing history from this device. <ph name="BEGIN_LINK">BEGIN_LINK</ph>Learn more.<ph name="END_LINK">END_LINK</ph>
       </message>
       <message name="IDS_IOS_HISTORY_OTHER_FORMS_OF_HISTORY" desc="The notification at the top of the history page indicating that deleting Chrome browsing history will not delete other forms of history stored at Google My Activity.">
         Your Google Account may have other forms of browsing history at <ph name="BEGIN_LINK">BEGIN_LINK</ph>history.google.com<ph name="END_LINK">END_LINK</ph>.
       </message>
       <message name="IDS_IOS_HISTORY_SYNC_LEARN_MORE_URL" translateable="false">
         https://support.google.com/chrome/?p=sync_history&amp;hl=[GRITLANGCODE]
       </message>
-      <message name="IDS_IOS_HISTORY_URL_NOT_AVAILABLE" desc="The text displayed when a user navigates to the history URL to redirect them to accessing history via the tools menu.">
-        <ph name="HISTORY_URL">$1<ex>chrome://history-frame</ex></ph> is not available. To access your browsing history, select "<ph name="SHOW_HISTORY">$2<ex>History</ex></ph>" from the tools menu.
-      </message>
       <message name="IDS_IOS_HTTP_LOGIN_DIALOG_PASSWORD_PLACEHOLDER" desc="The placeholder text for the password on the http login dialog [Length: 20em] [iOS only]">
         Password
       </message>
       <message name="IDS_IOS_HTTP_LOGIN_DIALOG_USERNAME_PLACEHOLDER" desc="The placeholder text for the username on the http login dialog [Length: 20em] [iOS only]">
         Username
       </message>
       <message name="IDS_IOS_ICON_ARROW_BACK" desc="Accessibility label for the back arrow icon [iOS only].">
         Back
       </message>
       <message name="IDS_IOS_ICON_CLOSE" desc="Accessibility label for the close icon [iOS only].">
@@ skipping 822 matching lines @@
       </message>
       <message name="IDS_IOS_SIGNIN_PROMO_CONTINUE_AS" desc="Button that the user can press to login without asking the password and continue using Chrome with this acccount. [Length: 9em]">
         Continue as <ph name="NAME">$1<ex>John Doe</ex></ph>
       </message>
       <message name="IDS_IOS_SIGNIN_PROMO_NOT" desc="Button that the user can press if they are not the profile that Chrome found (opposite of 'Continue as Joe Doe').">
         Not <ph name="EMAIL">$1<ex>john.doe@example.com</ex>?</ph>
       </message>
     </messages>
   </release>
 </grit>