Remove clickbait and obnoxious ads from Cults3d.
I got sick of all the stupid Buzzfeed-style ads at the top and bottom of Cults3d, and the obnoxious inline video ads. This script kills them all. It causes a little bit of "jumping", since the ads are lazy-load and the script can't always kill an element before you've scrolled past it, but I think that's a small price to pay.
