How to get rid of Calibre Mobileread.json in my profile?!?

I installed Calibre on my desktop and now when I un-installed it, in my profile storage space it is taking up over 4000kb's of room. The file name is : Application Data\Calibre\Store\stores\mobileread.jso… and I cannot find it anywhere on my computer to delete this piece of crap! Does anyone know how to get rid of something like this??