HUNTSVILLE, Texas — A Texas death row inmate whose case redefined the role of spiritual advisers in death chambers nationwide was executed Wednesday, despite the efforts of a district attorney to stop his lethal injection. John Henry Ramirez, 38, was executed at the state penitentiary in Huntsville. He was convicted of killing 46-year-old Pablo Castro in 2004, as he took out the trash while working at a convenience store in Corpus Christi. “I have regret and remorse,” Ramirez told five relatives of Castro — including four of his children — as they watched through a window a few feet from...