Consumers who maintain they overpaid for under-filled boxes of chocolate did not obtain the sweet success they hoped for in litigation against Fannie May Confections Brands Inc.In a written opinion Wednesday, U.S. District Judge Sara L. Ellis threw out a lawsuit that two named plaintiffs filed in federal court under the Class Action Fairness Act.The suit accused Fannie May of violating the Illinois Consumer Fraud and Deceptive Business Practices Act by leaving empty at least one-third of its opaque, 7-ounce boxes of 10 …