Remove bottom bar from Physical Web Activity

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- android_chrome_strings.grd contains strings for Chrome for Android.
 
 FAQ:
   - How do I add, change, or remove a string?
       Just update this file.
   - Translations will happen automatically??
       Yes, indeed. Just add your string before the branch point and
       make the description good.
@@ skipping 2554 matching lines @@
       </message>
       <message name="IDS_PHYSICAL_WEB_EMPTY_LIST_SCANNING" desc="The message displayed in place of a list of nearby URLs while still scanning for nearby URLs.">
         Looking for nearby Physical Web pages
       </message>
       <message name="IDS_PHYSICAL_WEB_REFRESH" desc="The label for a button that initiates a scan for nearby URLs">
         Refresh
       </message>
       <message name="IDS_PHYSICAL_WEB_LAUNCH_BUTTON" desc="The label for a button that opens a list of nearby URLs">
         See what's nearby
       </message>
-      <message name="IDS_PHYSICAL_WEB_BOTTOM_BAR" desc="A message displayed in the nearby URLs list activity informing the user that a notification will appear whenever devices broadcasting URLs are nearby">
-        Future nearby Physical Web pages will show up in your notifications list
-      </message>
 
       <!-- WebUsb Picker UI strings -->
       <message name="IDS_USB_CHOOSER_DIALOG_PROMPT" desc="The text that is used to introduce the USB chooser dialog to the user.">
         <ph name="SITE">%1$s<ex>https://www.google.com</ex></ph> wants to connect
       </message>
       <message name="IDS_USB_CHOOSER_DIALOG_NO_DEVICES_FOUND_PROMPT" desc="The text that is used to inform the user that no devices found in the USB chooser dialog.">
         No devices found
       </message>
       <message name="IDS_USB_CHOOSER_DIALOG_CONNECT_BUTTON_TEXT" desc="The text that is shown on the connect button in the USB chooser dialog.">
         Connect
@@ skipping 303 matching lines @@
       </message>
       <message name="IDS_KEYBOARD_SHORTCUT_CHROME_FEATURE_GROUP_HEADER" desc="A text label that appears above a list of shortcuts that are related to the Chrome app features. This group is part of several groups of keyboard shortcuts all shown in a dialog.">
         Google Chrome feature shortcuts
       </message>
       <message name="IDS_KEYBOARD_SHORTCUT_WEBPAGE_GROUP_HEADER" desc="A text label that appears above a list of shortcuts that are related to manipulation of the current tab window. This group is part of several groups of keyboard shortcuts all shown in a dialog.">
         Webpage shortcuts
       </message>
     </messages>
   </release>
 </grit>