Mitchell Robinson didn’t shy away or mince words. He knows exactly what’s in store for the Knicks’ first-round series against the Pistons.  And, importantly, his role in all of it.  “It’s going to be a dirty series,” Robinson said after practice Thursday. “We’re going to get out there and fight. That’s the biggest part about it. Physicality with Detroit and us. It’s something we just have to bring.”