Lance Twiggs was living with Robinson when Kirk was killed last year.A judge on Monday dismissed a motion by Tyler Robinson’s attorneys to subpoena his former romantic partner to testify in court next month. Robinson, 23, is accused of killing right-wing activist Charlie Kirk as he spoke at a campus debate at Utah Valley University in Orem last year. Robinson faces multiple charges in connection with the killing, including felony aggravated murder. On Monday, state District Judge Tony Graf Jr. granted prosecutors’ motion to quash a subpoena brought by defense attorneys to have Lance Twiggs testify live in Utah at...