SAN FRANCISCO (AP) — Gov. Jerry Brown's administration scaled back the latest version of his four-decade effort to redo California's north-south water system Wednesday, cutting plans to build giant water tunnels from two to one. Reducing the number of tunnels — at least for now — would help California's quest to line up enough funding and ease environmental concerns over tapping directly into the state's largest river, officials said. Supporters also hope the trimmed-down project will have a better chance of winning approval before the 79-year-old governor leaves office in January.