CLEVELAND – Kevin Porter quickly went from being a future star with the Cavaliers to part of their past.Cleveland completed its trade with Houston on Friday, sending Porter to the Rockets for a second-round draft pick, a deal the Cavs had no choice to make after running out of patience with a player they once viewed as a possible franchise cornerstone.The teams agreed to the swap on Thursday night, less than a week after Porter's outburst in Cleveland's locker room convinced the team it had to part with the 20-year-old.“After careful and thoughtful evaluation, we made the very difficult and collective decision to make this trade,” Cavs general manager Koby Altman said. “Given the culture and environment we have worked to cultivate here in.