erase a link in a old topic

Hi,
i hope i’m at the the good place
i post on this site an topic many month ago.
http://wordpress.org/support/topic/tanzaku-and-problem-with-static-page-as-homepage?replies=5
i’d like to erase the last link near my site because i got a lot of russians bots from this point
how can i do ?
thx