Update: This story was updated to clarify that the motorist was shot by an off-duty aviation security officer, not a police officer.The city of Chicago was found not liable for the shooting of a motorist by an off-duty aviation security officer with the city’s Department of Aviation.In a written opinion Wednesday, U.S. District Judge Gary Feinerman did not rule on the merits of the allegation that Jordan Wisniewski committed assault and battery when he shot Tomas Blasberg during a traffic altercation.But Feinerman …