It's easy to get the ad's handle. However, if you remove it, the border still stays, the label stays, and the listbox is not resized. (it might be if you could remove the label/border, but they're windowless and don't have handles...or something like that)
The most you could do with the ad's handle is stop it from being clicked on
well actually i guess you could change it to an ad of your choice but ehhh