Singer Bobby Short, 80, died this morning in New York, the city whose elegance he epitomized. Short had suffered from leukemia. Bobby Short was a fixture at the Cafe Carlyle, where he entertained the rich, the famous, and the tourists who could afford it. It was a world far different from the one from which he came. Born in Danville, Ill., just before the Depression, Short began his professional career at 9.