Hell-O @AlexWoffle yeah, this issue occured lately, its fixed.
Although, as you tried, some users have to clear their browsers cache (mainly firefox users)
Delete... you cant.
You can ask a mod to do so, or just let the thread die out.
I would say deleting this thread isnt needed, bit ill lock this thread up, because we have a main thread about this problem...if anyone who reads this have still have this "yellow-button"-issue please use that thread.