You can't delete it, but you can hide it so it doesn't appear at the bottom of the page. There is a link just above the chat archive that allows you to do this.
(sakla) If you want to save on bandwidth you can reduce the amount of information that shows up in your pages in the Settings. Try changing the number of games in the main page and the number of messages per page. (pauloaguia) (Bütün ipuçlarını göster)