I would doubt it. Phantom Hourglass and Spirit Tracks were entirely designed around hardware in more ways than controls. Items, enemies, visuals, level design, everything was made with the DS in mind. Remaking either game for hardware that lacks the unique features of the DS would be difficult. For example, how would you translate that one puzzle in Phantom Hourglass that requires you to close the DS to the Switch?
Not saying it'd never happen — Lord knows Nintendo love a re-release — but I don't think it's likely because of the amount of difficulty they'd have with the game's original design compared to other titles.