Sizzling Clint Frazier is making it hard for Yankees: I’m ready

MOOSIC, Pa. — Clint Frazier acknowledged he couldn’t summon himself back to The Bronx. But he admitted it begrudgingly. “I know I’m ready,” Frazier, rehabbing with Triple-A Scranton/Wilkes-Barre, told The Post this weekend. “I don’t think there’s much more I have to prove to myself to know I can go out there and perform. This…