Can I cancel a download of a Mac Store app? I just got a really large Mac App Store app, (2GB), but Im having some trouble with my diskspace... 

Is there a way to completeley cancel the download of the app? I mean not just pause it but cancel it. The icon on the dock kind of stresses me out, and it reappears even if I drag it out.
Specifically in Lion, here's how to do it:


Go to Launchpad, click and hold on the downloading item
All icons will start wiggling
Click the (X) on the download


or 


Hold down the Option key from the “Purchases” menu in the Mac App Store, this causes the “Pause” button to turn into “Cancel”. See this article for detail.


It will ask for a confirmation. I confirmed delete, and it was still there    - a reboot made it disappear, but I suppose you could restart just Launchpad as well.