I'm trying to remove the dock of annoying apps that shows at the bottom of the IMessage screen on IOs 11. Without Voiceover the method seems to be to swipe down on, or next to, the store app, but I can't seem to get that to work with voiceover on. Even when I turn voiceover off, apparently I'm not being accurate enough. Apparently the app dock is supposed to go away, only returning with a restart of the IMessage app. For the nonvoiceover instructions, go here.