removing Skins in ah folder

[falcon23]

I have all skins DL and want to remove some from out of my folder I do not ever use,they are just taking up space..I wrote down the names in-game but when I went into my skins folder,they are all ,res folder and I dont know which is which..Is what I am wanting to do even possible?
                                              Thanks,

[The Fugitive]

Go to the AH skins page and match the files rez numbers with the skin names