OK,
So while testing and playing with 2012 R2 Collection I first did the quick deploy which make paint, calculator available etc - then I deleted the complete collection and setup the collection for the live environment but paint, and cal are still visitable when I logikn via web access.
I can't delete the apps from the collection because I delete it, I am guessing this is in IIS somewhere but I am not sure where exactly
500pnts
HKLM\ SOFTWARE\ Microsoft\ Windows NT\ CurrentVersion\ Terminal Server\ CentralPublishedResources\
Please remove the old applications from the RD Connection Broker's registry. Please make a backup of the registry key before you delete the key(s).