I wanted to get an Empoleon with Stealth Rock for my competitive team, but I found out it can't learn that move anymore in Sun and Moon, since the Move Tutor has been removed. since I don't have any of the Gen 6 games, I need to use a Piplup in my Pearl game, which I can transfer to White with that horrid minigame. That way, I can get an Empoleon with Stealth Rock transferred to Moon, I assume. Is there any other way of getting a Pokémon with a move it can no longer learn in Sun and Moon to said game?
As sumwun commented, There is no way to get that without hacking. Sorry.