Kyle Busch was surprisingly a non-factor during Sunday’s Goodyear 400 at Darlington Raceway. Busch, who started 11th, finished a disappointing 27th and failed to lead a single lap. As Denny Hamlin put it on his “Actions Detrimental” podcast, the two-time Cup Series champion was “nonexistent” at Darlington. “[Kyle was] nonexistent yesterday, holy s***,” Hamlin said. “He was bad. Bad all day.” Busch, coming off a P4 finish at Dover and P8 finish at Kansas, slipped to 13th in the points standings after his run at Darlington. Still on the hunt for his first win of the season, Busch said he “just d…