Removing aria-practices-DeletedSectionsArchive.html

[nschonni]

Pulling out discussion from #1535

I'd also suggest getting rid of aria-practices-DeletedSectionsArchive.html if you're cleaning up

Please don't get rid of the Deleted Sections Archive. It contains valuable historical context. There's nowhere else that still has info on the Rich Text Editor pattern, for example, and its discussion about using Ctrl + M to allow tabbing out of the editor widget. 😄

Originally posted by @carmacleod in #1535 (comment)