By TOM SHANAHAN Duke coach David Cutcliffe announced he’s shuffled his coaching staff following a 2-9 season, but the most significant move involved the head coach. He’s given up the play-calling duties and going back to a CEO role. This time last year Cutcliffe took over the play-calling duties while planning for the 2020 season. But that was before the COVID-19 pandemic wiped out spring football, off-season training and limited time working with a new quarterback. It wasn’t…