Plugins: Remove trailing pipe symbol in sub navigation after updating the last plugin.

Props sagarprajapati.
Fixes #39655.

git-svn-id: https://develop.svn.wordpress.org/trunk@40025 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/js/updates.js

@@ -319,6 +319,7 @@
 			$( '.subsubsub .upgrade .count' ).text( '(' + itemCount + ')' );
 		} else {
 			$( '.subsubsub .upgrade' ).remove();
+			$( '.subsubsub li:last' ).html( function() { return $( this ).children(); } );
 		}
 	};