Anthony Volpe’s rehab assignment is over — and so is his time in the majors, for now. As first reported by The Post’s Joel Sherman, Volpe was optioned to Triple-A Scranton/Wilkes-Barre on Sunday after being reinstated from the 10-day IL. The Yankees had to make a roster move with Volpe by Tuesday, as his 20-day rehab window ended after his hitless day with Double-A Somerset. In his comeback from offseason surgery to repair a torn labrum in his left shoulder, Volpe has not hit well in the minors, and the Yankees have seen his replacement, José Caballero, exceed expectations. So what was once considered almost a formality — that Volpe would reclaim his starting job at shortstop with the Yankees as soon as he was able — is now on hold. Anthony Volpe swings during Somerset’s April 17 game. Charles Wenzelberg And the player, who appeared in just 22 Triple-A games before winning the starting shortstop job out of spring training in 2023, is headed back there.…