At long last, the Sacramento-San Joaquin River Delta twin-tunnels boondoggle is dead. Good riddance. Gov. Gavin Newsom made that official Tuesday during his State of the State address, calling instead for a smaller, single-tunnel approach that would include a broad range of projects designed to increase the state’s water supply. Bravo. It’s a refreshing shift from Gov. Jerry Brown’s stubborn insistence that California spend $19 billion on a project that wouldn’t add a drop of new water to the state supply.