Update StatusReplyPipeline, remove expensive reply count re-calculation query

app/Jobs/StatusPipeline/StatusReplyPipeline.php

@@ -68,14 +68,6 @@ class StatusReplyPipeline implements ShouldQueue
             return 1;
         }
 
-        if(config('database.default') === 'mysql') {
-	        DB::transaction(function() use($reply) {
-	        	$count = DB::select( DB::raw("select id, in_reply_to_id from statuses, (select @pv := :kid) initialisation where id > @pv and find_in_set(in_reply_to_id, @pv) > 0 and @pv := concat(@pv, ',', id)"), [ 'kid' => $reply->id]);
-	        	$reply->reply_count = count($count);
-	        	$reply->save();
-	        });
-        }
-
         DB::transaction(function() use($target, $actor, $status) {
             $notification = new Notification();
             $notification->profile_id = $target->id;