THE death of Danny Gans never made a big spalsh in the mainstream media. But the death of Gans, a Las Vegas stalwart, by iatrogenic means continues to occupy the thoughts of Anorak’s Man in LA . He reviews the latest news: Danny Gans’ autobiography makes its official debut in bookstores today– the same day that Garth Brooks will announce he’s starting a long run at the theatre left vacant by Danny Gans’ death. The Voices In My Head arrives five months after the Las Vegas headliner died of