Thanks, mmerlin. That does get rid of them. Of course it leaves me with a function enabled that I'd deliberately disabled - the swiping happened too easily when I didn't want it to.
And in fact, the three icons that you and I asked for are one-tap available - they're just in an entirely new place, and have removed other info. The account and folder info at the top, that ksuuk is complaining about disappearing, has been removed to make room for those three icons (Move to Folder, Archive, Mark Unread). Not an acceptable tradeoff, to my mind - I need that info! When the email just says it's to "me", I need to know which of my four accounts and many folders it's to and in.