Get rid of banner at bottom of Blog Mu Theme.

What is the best way to get rid of the banner on the bottom of the theme “Blogs MU” THe banner says Get Started WIth Now For Free.

One option is that I can just switch it with another banner by just renaming and replacing the file name Banner.png, but how would I link it to something?

I just don’t see anywhere in the site admin to control it.