The Detroit Pistons’ toughest opponent Sunday wasn’t the Charlotte Bobcats. It was boredom. The Pistons jumped out to a double-digit lead in the first seven minutes then cruised to a 104-85 victory over the Bobcats. “It’s hard,” said Antonio McDyess, who had 19 points and nine rebounds. “You get out to a big lead against a team like that, and you start to lose your focus.” After Detroit took an early…