In iOS 5-6 one had the ability to hide apps they didn't need anymore from the Purchases apps list. This feature was removed during the iOS 7 UI overhaul. However I recently noticed something interesting in iOS 9...

This currently only appears when swiping on an app in landscape mode on the Plus. Also it doesn't actually save which apps you have hidden when you leave the page and come back.

This currently only appears when swiping on an app in landscape mode on the Plus. Also it doesn't actually save which apps you have hidden when you leave the page and come back.