[UI Strings] Remove unused strings in ui/strings/ui_strings.grd

ui/strings/ui_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by app/ that
 need to be translated for each locale.-->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
     <!-- TODO add each of your output files.  Modify the three below, and add
@@ skipping 460 matching lines @@
       </message>
       <message name="IDS_APP_DOWN_ARROW_KEY" desc="Down arrow key">
         Down Arrow
       </message>
       <message name="IDS_APP_ENTER_KEY" desc="Enter key">
         Enter
       </message>
       <message name="IDS_APP_SPACE_KEY" desc="Space bar key">
         Space
       </message>
-      <message name="IDS_APP_ALT_KEY" desc="Alt key">
-        Alt
-      </message>
       <message name="IDS_APP_F1_KEY" desc="F1 key">
         F1
       </message>
       <message name="IDS_APP_F11_KEY" desc="F11 key">
         F11
       </message>
       <message name="IDS_APP_BACKSPACE_KEY" desc="Backspace key">
         Backspace
       </message>
       <message name="IDS_APP_COMMA_KEY" desc="Comma key">
@@ skipping 79 matching lines @@
       </message>
       <message name="IDS_MESSAGE_CENTER_FOOTER_TITLE" desc="The label in the footer of the message center">
         Notifications
       </message>
       <message name="IDS_MESSAGE_CENTER_FOOTER_LOCKSCREEN" desc="The label in the footer of the message center on lock screen">
         Unlock device to view your notifications
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_BUTTON_LABEL" desc="The button label for visiting the appropriate settings page in the footer of the message center.">
         Settings
       </message>
-      <if expr="is_macosx">
-        <message name="IDS_MESSAGE_CENTER_SETTINGS_GO_BACK_BUTTON_TOOLTIP" desc="The tooltip on back button that returns from settings to the notification list.">
-          Go back to notifications
-        </message>
-      </if>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_DIALOG_DESCRIPTION" desc="The label to describe the settings dialog.">
         Allow notifications from the following:
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_DESCRIPTION_MULTIUSER" desc="The label to describe the settings dialog if there is more than one user.">
         Allow notifications from the following for each user:
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS" desc="The menu entry or button for visiting the appropriate settings page.">
         Settings...
       </message>
       <message name="IDS_MESSAGE_CENTER_CLEAR_ALL" desc="The button for clearing all notifications.">
@@ skipping 33 matching lines @@
         </message>
         <message name="IDS_MESSAGE_CENTER_NOTIFIER_HATS_NAME" desc="The name of hats notifier that is a system component">
           Hats
         </message>
         <message name="IDS_MESSAGE_CENTER_NOTIFIER_QUICK_UNLOCK_FEATURE_NAME" desc="The name of quick unlock feature notifier that is a system component">
           Quick Unlock Feature
         </message>
       </if>
 
       <!-- App list -->
-      <message name="IDS_APP_LIST_HELP" desc="The menu entry to show the app list help UI.">
-        Help
-      </message>
-      <message name="IDS_APP_LIST_OPEN_FEEDBACK" desc="The menu entry to show the feedback UI.">
-        Send feedback
-      </message>
       <message name="IDS_APP_LIST_BACK" desc="The name of the button that goes to the previous screen in the launcher.">
         Back
       </message>
       <message name="IDS_APP_LIST_ALL_APPS" desc="The text on the button that opens the app grid view in the app launcher.">
         All Apps
       </message>
       <message name="IDS_APP_LIST_FOLDER_NAME_PLACEHOLDER" desc="The placeholder text for app list folder name.">
         Unnamed Folder
       </message>
       <message name="IDS_APP_LIST_FOLDER_BUTTON_ACCESSIBILE_NAME" desc="The spoken feedback text for navigating to a folder button in top level app list">
@@ skipping 35 matching lines @@
       </message>
       <message name="IDS_DISPLAY_NAME_INTERNAL" desc="The name used for internal displays, which is shown in the display settings.">
         Internal Display
       </message>
       <message name="IDS_DISPLAY_NAME_VIRTUAL" desc="The name used for virtual displays, which is shown in the display settings. Virtual displays are not associated with a physical monitor.">
         Virtual Display
       </message>
     </messages>
   </release>
 </grit>