Politico on Friday broke the news that our newspaper of record has opted to jettison “freelance columnist” Willie Brown at month’s end, putting a belated conclusion on an inexcusable and, frankly, inconceivable situation. And it only lasted 12 years. Less time than the Central Subway project or Geary BRT - but an embarrassingly long stretch for something that shouldn’t have happened in the first place. Brown, former mayor and Assembly speaker, and still very much a mover and shaker, high-level information peddler, and registered and unregistered lobbyist in this town, should never have had a column in the San Francisco...