Chai Soua Vang, 57, who was convicted of killing six deer hunters in Wisconsin in 2004, has died, according to court records.Vang, an immigrant truck driver, was convicted in 2005 of first-degree murder for the shooting deaths during a confrontation over trespassing. He claimed he fired in self-defense.The deadly incident occurred near the town of Meteor in Sawyer County.Vang said the shootings began after one of the hunters all white used profa…