By Andrew Holleran Duke assistant coach Chris Carrawell went viral on social media Saturday night when he snubbed North Carolina head coach Hubert Davis in the postgame handshake line. North Carolina upset No. 4 Duke, 94-81, in the final home game of Coach K’s career at Cameron Indoor Stadium. Following the win, Carrawell refused to shake hands with Davis. According to a report from the News & Observer, Carrawell had a “reason” for snubbing Davis in the postgame handshake line: Carrawell told the (Raleigh, N.C.) News & Observer in a postgame text that Davis “did not shake our hands before the …