Tony Sirico, one of the main stars of "The Sopranos," is dead ... TMZ has confirmed.Tony played Paulie "Walnuts" Gualtieri, one of Tony Soprano's main guys for every season of the HBO hit show. His brother Robert announced his passing on Facebook saying "It is with great sadness, but with incredible pride, love and a whole lot of fond memories, that the family of Gennaro Anthony "Tony" Sirico wishes to inform you of his death."Sirico was a big supporter of the U.S. military -- he and James Gandolfini once traveled to Iraq for a rally for the troops there. He...