The more you hear from 76ers coach Brett Brown, the more you realize that he’s not in denial about where the team is going this season. And you realize he’s the right person to coach the team through this rebuilding process. “When you lose the volume of games we lost over the years . . . holding a locker room together [is key],” Brown said Saturday at the conclusion of training camp at Stockton University. “The pain of losing is real. So you need spirit throughout. It’s my job to keep them together and keep them moving forward.”