Special counsel Jack Smith might be avoiding calls to demand the removal of Judge Aileen Cannon from Donald Trump’s classified documents case because it would kill any chance he has of getting a trial before the election, an expert said. While Smith has not indicated that he wants to ask for Cannon’s removal, experts have urged him to — particularly after former Mar-a-Lago worker Brian Butler, who is a potential star witness in the case, publicly described how he unwittingly helped co-defendant Walt Nauta move boxes of classified documents onto Trump’s private plane in June 2022. Calls for Can…