A source close to Quinn Ewers tells On3 that 247Sports’ deleted Instagram post about the Texas quarterback sitting the rest of 2024 to prepare for the NFL draft is false. “It is absolutely not true,” the source said. The Longhorns are coming off a 30-15 loss to Georgia on Saturday night. Ewers was replaced by Arch Manning in the second quarter but returned and played the entire second half. He finished 25 of 43 for 211 yards with two touchdowns and an interception. “Quinn’s our starting quarterback,” Texas head coach Steve Sarkisian said in his postgame press conference on Saturday night. “I a…