A 55-year-old Lynn man allegedly murdered his wife early yesterday morning, then called his sister to confess to the crime, police said.Miguel Castillo then remained in the apartment where, moments earlier, he had used a metal baseball bat to bludgeon her to death, police said.When cops arrived at the second-floor apartment on Chase Street, he answered the door and held his hands out to them.“Go ahead. Take me. I killed my wife,” police said he told them.