ATLANTA — Already facing a daunting task after losing the first two games at home in the Eastern Conference final, the Atlanta Hawks were dealt another major blow Saturday when 3-point specialist Kyle Korver was ruled out for the rest of the playoffs because of a severely sprained right ankle. The guard was injured in Game 2 while scrambling for a loose ball. Cleveland’s Matthew Dellavedova slammed into the side of Korver’s ankle late in the third quarter of the Cavaliers’ 94-82 victory Friday night.