JOHN Schneider holds some bitterness over “The Dukes of Hazzard,” the 1970s series that made him a TV sensation. “They still sell ‘Dukes’ merchandise at Target, and none of us see a cent of that, of course,” said Schneider, star of the Hallmark Channel’s “Come Dance at My Wedding,” debuting June 6. “We were supposed to get a piece of it, of the tape and DVD sales. We made millions for people we never even met and will continue to into perpetuity. Would I like a piece of that for my kids after I’m gone? You bet. But that’s the way it goes.”