You will have to rename the file, and put it in a folder with something else. Name it something like "St@rcraft" or a variation of a game you have, and put it in the folder with it. Remove the entry for it from the Programs list.
If you're willing to put in the effort, you could build a live CD of linux using Ubuntu, or a BARTPE live Windows XP, preloaded with World of Warcraft.
Or...run it in a VM. It will use ~1gb, just put it in a folder and name it something obscure.