Phil Kirk, retired chairman of DST Realty Inc. and a huge contributor to Downtown's revitalization, has died — just a few months after the city got the chance to thank him in a big way. He was 76. In November, the Greater Kansas City Chamber of Commerce bestowed its highest civic honor, the Kansas Citian of the Year Award, on Kirk before a crowd of more than 1,800 during the chamber's annual dinner at the Kansas City Convention Center's Grand Ballroom. “Phil Kirk is the quintessential example…