Comedian Colin Quinn has some sad news about his hometown: New York is dead. The Brooklyn-born Irish-American comedian returns to the stage this month eulogizing the loss of loudmouth, opinionated New Yorkers in his one-man show “The New York Story” at The Cherry Lane Theatre. Previews begin this week and it opens July 23. Quinn’s show, directed by Jerry Seinfeld, mourns what he considers a homogenized, cautious city. He’s a guy who likes the needy bluntness of former Mayor Ed Koch, pizza slices and listening to cab drivers swear.