Mayor Justin Elicker on Tuesday declined to comment on New Haven’s legal approach in an ongoing wrongful-conviction trial — in which a lawyer representing the city has argued that former Det. Vincent Raucci did not frame Scott Lewis and Stefon Morant for a 1990 double murder. Even though the state has awarded Morant $5.84 million for a wrongful conviction claim. Even though the city itself, under former Mayor Toni Harp, paid Lewis $9.5 million i…