We’re not gonna get excited about Melo cracking open a 40 and the Knicks fighting off elimination, OK? Win again Wednesday night in Miami. That will make you the lead of the playoffs roundup. Here’s what everyone should be excited about: the 76ers and Celtics look like they will be playing each other in the Eastern Conference semifinals. Thirty years ago, this was the best rivalry in all of sports. Here’s all you need to know about how much these teams hated each