Review-Journal columnist John L Smith has resigned from the Las Vegas newspaper in protest at a ban on writing about its new owner, Sheldon Adelson. Until this week, Smith, who Adelson once attempted to sue for defamation, wrote a popular column in the paper on issues facing Las Vegas, from human interest stories to politics. Adelson sued Smith in 2005 over his book Sharks in the Desert. The lawsuit stated that “Smith deceptively manipulates language, quotations, and sources in order to concoct the smear that Adelson had dealings with the Boston Mob when Adelson was in the vending machine business.” The…