“The saddest thing in life is wasted talent,” but no one could accuse actor and playwright Chazz Palminteri of having squandered an ounce of it. The accomplished multihyphenate brought a revival of his one-man show, “A Bronx Tale,” to the sold-out Emerson Colonial Theater on Oct. 9. The filled seats were an excellent reminder of why “A Bronx Tale” launched Palminteri to superstardom more than thirty years ago.