ATLANTA — OG Anunoby scored 29 points in 27 minutes, Karl-Anthony Towns had his second triple-double of the series and the New York Knicks had their biggest playoff victory in franchise history, overwhelming and eliminating the Atlanta Hawks 140-89 in Game 6 on Thursday night. The Knicks broke several NBA records by halftime. Their 40-15 lead at the end of the first quarter marked the largest of the shot clock era. Their 47-point halftime lead was the biggest in playoff history. New York’s 51-