By TOM SHANAHAN Duke is another round closer to the NCAA tournament or another round deeper into the post-season, depending on how you how view the ACC tournament. Duke coach Mike Krzyzewski has his team playing as if the Blue Devils are already in the NCAA tournament and they just advanced to another round. The 10th-seeded Blue Devils defeated No. 7 Louisville 70-56 on Wednesday in Greensboro to advance to Thursday’s quarterfinal round. Duke (13-11) faces second-seeded and…