“Mr. Irrelevant” has no qualms about shattering the heart of the world’s biggest pop music superstar. San Francisco 49ers quarterback Brock Purdy did not hesitate when asked Monday if he felt “prepared to disappoint Taylor Swift” by defeating her beloved Kansas City Chiefs in Super Bowl LVIII on Sunday. “Yes. I’ll leave it at that,” Purdy replied with a smile as Chiefs quarterback Patrick Mahomes stood next to him. According to Sports Illustrated, the exchange occurred Monday in Las Vegas, site of the big game. To help kick off Super Bowl week, the NFL Network’s Scott Hanson conducted a lighth…