EXCLUSIVE: One week after Iron Fist was canned and the same day that the long awaited third season of Daredevil launched, Netflix has canceled Luke Cage. Unfortunately, Marvel's Luke Cage will not return for a third season,” Marvel and the streaming service said on Friday. “Everyone at Marvel Television and Netflix is grateful to the dedicated showrunner, writers, cast and crew who brought Harlem's Hero to life for the past two seasons, and to all the fans who have…