SPRINGFIELD — The director of the Illinois Law Enforcement Training and Standards Board was fired this fall after an investigation found that he improperly issued a law enforcement certificate to an unqualified local philanthropist who’s also the son of billionaire investor Warren Buffett, according to a report released Wednesday. The Office of Executive Inspector General for the Agencies of the Governor determined that Brent Fischer, executive director of the standards board since 2015, issued the certificate to Howard …