Prosecutor Jim Phillips kept it short and sweet during his opening statements as the trial of a Grass Valley man on pot sales charges got under way. “This case isn’t really about marijuana,” Phillips told the jurors. “It’s about profit.” Ronald Hansen, 54, was arrested in November 2011 after a Nevada County Sheriff’s narcotics task force member responded to his Craigslist.org advertisement, set up a buy and met with him in the parking lot of a Grass Valley restaurant. As his trial began Wednesday morning in Nevada County Superior Court, Phillips told the jury he wanted to break the case …