Removing Wallpapers

I’m new here just to mention in advice.

I was trying out the download Wallpaper to see if I would like it on my PS3 system so I tryed one of the wallpapers of Ratchet and Clank Future: TOD but I didn’t really like it so I went and deleted it so even if it is off the system when I got into my theme settings and go to wallpapers it keeps appearing on the screen even after I deleted it so my question is will it go after after awhile if it’s not being used or is it there until I get a newer wallpaper downloaded?.