Realistic has been discontinued a long time ago and hasn't continued to exist in updates. Only old installations even have these files. I don't think the game can be told to delete files, only overwrite old versions of files. I believe Kupu is even against purposely destroying these files by overwriting them as they can be used as a reference if anybody wants to create a new texture pack or even revive the old one.Hmmm and what of realistic? If it continued to exist in updates will it at least be given default textures for new blocks?