A federal judge tossed a lawsuit accusing the city of Chicago of violating antitrust law by circumventing the bidding process to ensure General Electric was selected for a large-scale lighting project.In a written opinion Monday U.S. District Judge Amy J. St. Eve rejected plaintiff Neptun Light Inc.’s argument that one rejected contract made the city’s lighting product market less competitive.She also found Neptun did not explain how GE Lighting was involved in the alleged conspiracy nor did they name the …