Banner help?

Hello WordPress people.
After hours of searching for a decent theme I have finally found one.
And I have encountered jet another problem.

PROBLEM.IMAGE

My question now is how do I remove that banner cause there is no option in the theme to disable it only to change it and since I don’t know how to make one I want it gone cause cod:bo banner on the ac3 wallpaper just don’t match!
Thank for all the help!