Following the culmination of a long-running class action lawsuit, AT&T and Apple are set to pay out $40 to customers who were affected when AT&T ended its unlimited data plan for the iPad 3G back in June of 2010, reports GigaOM.In a ruling issued this week in San Jose, California, US District Judge Ronald Whyte signed off on a plan that will see Apple pay $40 to everyone in the US who bought or ordered an iPad 3G before June 7, 2010. In addition, those who did not sign up with AT&T will get a $20/month discount on the carrier’s 5GB monthly plan for up to a year.Prior to J