By Jon Brodkin / Daily News Staff Wednesday, February 23, 2005 Diesel pollution is responsible for more deaths than drunk drivers and homicides, according to a new study that estimates how many premature deaths, asthma attacks and heart attacks are caused by diesel pollution in every U.S. county. Nationwide, diesel pollution causes 21,000 premature deaths each year, including 475 in Massachusetts and 81 in Middlesex County, robbing those who die of an average of 14 years of their lives, according to the report by the Boston-based Clean Air Task Force. Residents in nearby Suffolk County suffer the third highest risk...