Holding down the hamburger button removes all elements of the HUD, except the clock. I don't know if this is an issue with the core, or a route issue, as it was with the HUD in photo mode on the Thomas & Friends DLC.
I believe this is an issue with the core but is oddly inconsistent. At times when I disable the hud, everything goes away. But most of the time the clock remains. I don't think this varies route to route, but is an overall issue within the game.