LAS VEGAS — No one showed up to seek an extension, and a judge in Las Vegas dissolved a protective order that had been issued for the wife of a troubled Nevada state lawmaker.Neither Assemblyman Steven Brooks nor his wife, Ada, appeared Tuesday before Clark County Family Court Pro Tem Judge Lynn Conant dissolved the Feb. 10 protective order.Steven Brooks’ attorney, Mitchell Posin, said the two-term Democrat from North Las Vegas was in Carson City, where his fate in the Legislature remains in limbo.He has been banned from meetings with party colleagues in the Assembly and banished from the Nevada …