By Tzvi Machlin With Kevin Durant trying to orchestrate a trade out of Brooklyn, there are up to 29 teams that would probably give almost anything for him. But one former NBA star believes that there are four teams Durant shouldn’t join. On Monday’s edition of First Things First, former NBA champion Antoine Walker suggested that Durant avoid the urge to join the Phoenix Suns, Golden State Warriors, Miami Heat or Boston Celtics. Walker explained that Durant can’t make the argument that he’s a “GOAT” if he keeps joining superteams. He encouraged Durant to try and be a competitor instead. “I want…