By Zach Koons The Peacocks’ Cinderella run came undone against the Tar Heels. No. 8 UNC dashed the Cinderella hopes of No. 15 Saint Peter’s and advanced to the Final Four with a 69–49 victory in the Elite Eight on Sunday afternoon in Philadelphia. The Tar Heels dominated from the opening tip, leading the Peacocks by as much as 27 points in the win. UNC stifled Saint Peter’s offense throughout the contest, holding the MAAC champs to just 30% shooting and 4-of-16 from beyond the arc. The Tar Heels never trailed on their way to claiming the East Region’s spot in the Final Four. Junior forward Arm…