Will Thorne Staff WriterSandy Kominsky is going to have to find himself a new agent.Alan Arkin, who plays rep Norman Newlander to Michael Douglas’ actor, is exiting “The Kominsky” method ahead of its third and final season at Netflix, Variety has confirmed.Sources with knowledge of the situation say the decision for Arkin to leave the series was made some time ago, and that his departure will be addressed in the storyline for season 3.News of Arkin’s exit comes almost three months after the