How to delete .lvl files?

[lighthouse64]

YOU GOTTA BE ME, one of my reputation comments led me here, anyways, I dont understand it, but I was creating a level, an odd level, and so I didnt know where to save it, so I saved it in the graphic folder of warp9 in the episode... so its not visible for some reason, so I cant delete it because its not visible...

You might want to try searching for it...