I have plenty of skins that I don't like that cames downloaded from .rfcmp files, is there a way to have them removed mainly to save on drive spaces and to keep them out
If their installed just make sure you un-install them before you delete the rfcmp from the packaging folder. If their not un-installed first and you delete the rfcmp you'll have to go through the installed folders manually because just deleting the rfcmp doesn't remove them from your install folder.
Look for the .mas file they're in, open it with mas2.exe, select the skin you would like to delete, click "cut" and its gone. After that; you altered the .mas and so the rfcmp file; it won't work anymore. You will have to repack the mod. Here's some sort of tutorial; the "cut" step isn't in there, but you do that where it says "extract". After "cut", you don't have to save the mas file as it is already saved. https://www.dropbox.com/s/x1z1ewd82wpdww9/Tutorial to create an installable RFCMP file.pdf?dl=0