Young MC, Morris Day and Milli Vanilli are among the scheduled acts who have said they will not be appearing. WASHINGTON — A day after the President Donald Trump-affiliated Freedom 250 announced the “first wave” of performers for “The Great American State Fair” shows on Washington’s National Mall in June and July, Young MC and Morris Day are among the scheduled acts who have said they will not be appearing. Day and Young MC issued statements on social media disputing Freedom 250’s announcement on Wednesday. Scheduled performers also include “Milli Vanilli,” the pop duo from the 1980s who were discredited…