By Daniel Chavkin The charge stemmed from a traffic incident from November with former Duke teammate Michael Savarino. An aiding and abetting DWI charge against Paolo Banchero was dropped Thursday after his former Duke teammate Michael Savarino pleaded guilty to a DWI earlier in the week, the RaleighNews & Observer’s Stephen Wiseman reports. The decision is “standard procedure” once Savarino chose to cooperate with the case and agreed to a plea deal. Savarino, grandson of former Duke head coach Mike Krzyzewski, and Banchero were arrested in November when Savarino ran a stop sign and was suspec…