An hour before Friday’s game against the San Antonio Spurs, Toronto Raptors coach Sam Mitchell was asked whether a nearly weeklong layoff might cause his team to be a bit rusty. Mitchell was unequivocal in his response. “Why would I worry about it? There’s nothing I can do about it,” he said. “I actually think we needed it.” After the Raptors stomped the Spurs 83-73 Friday night, Mitchell might have…