Please do not mess with the .besti files. They are managed by Besti itself. 

The only thing you can do here is delete the 3 directories above, and only if you're doing a clean install of the textures. The directory structure must be here for the game to start, though, so if you delete these, go up a directory into "textures", then go into "Original Structure" to get a clean directory structure that can go here. 