By TOM SHANAHAN Duke hopes to return to the football field Friday night at George Tech. The Blue Devils have been preparing their game plan as usual, but they can’t be sure they’ll kick off until the referee signals for play to begin. That’s college football in 2020 while trying to play through the COVID-19 pandemic. Duke’s scheduled game last week against Wake Forest had to be postponed – and later canceled – due to COVD-19 infections on…