BOSTON (CBS) — Granted, it wouldn’t make much sense for Jonathan Papelbon to use “Shipping Up To Boston” as his entrance music, now that he’ll be pitching in the City of Brotherly Love, but the Dropkick Murphys are taking a proactive approach to the 2012 season. They won’t let Papelbon use their song anymore. “He can’t use ‘Shipping Up To Boston,’” lead singer Ken Casey told ESPN Music. “That’s a Boston song.” Casey told ESPN that he’s already moved on to the Andrew Bailey era in Boston. “And I have to get with the new Sox closer to let him...