Kellan Grady was in a gym hoisting jumpers on Monday, trying his best to mimic the form he refined playing at Kentucky this past season. But something was conspicuously missing during his pre-draft workout with the Charlotte Hornets: The name “Granddad” didn’t get mentioned. “That stays in Lexington,” Grady said, referring to the city in which the University of Kentucky is located. “Nobody has called me that since I left school.” Grady’s former teammates jokingly nicknamed him “Granddad” upon his arrival in Kentucky because he was so much older than most on the team. After donning the uniform …