Hello! I had each beta of El Capitan installed on my 2012 MB Air. I didn't get around to installing the GM build. Anyway, I installed the final version of the OS from the App Store, installed without issue. But, now I have the GM (final beta) build of El Capitan downloaded and waiting to be installed and I can't figure out how to delete it. It's stuck in my launchpad and no option to hide or delete. How do I get rid of it?!