Hi guys, I came from developer preview, and because of that I think, my mac auto downloaded the new 10.10.2 beta update from app store, and its asking me if i want to install it now, or postpone. I don't want to install beta on my mac anymore, so how do I delete this already downloaded firmware? I already disabled auto download now, so that part has been done. I just need to get rid of this downloaded file. Anyone can help? Thanks. EDIT: oh and also, how to stop beta to show up in my Updates section of Mac app store.