Knicks legend Walt “Clyde” Frazier …

Knicks legend Walt “Clyde” Frazier thought the team’s brass had forgotten about the franchise’s first title team. Can’t blame them. It’s been so long. As first reported by The Post, the Knicks announced Friday the staging of a 50th anniversary celebration of their first championship, from the 1969-70 season. The main festivities will occur at halftime of the March 21 game at the Garden against the Warriors. Stephen Curry, close to returning from a broken bone in his left hand, will get to learn a lot about the Knicks’ golden history.