Bobby Portis still isn’t running away from what he did. Fans on the road make sure of that, eagerly bringing up the punching incident whenever possible. But Portis is hearing the noise less and less. In the Bulls’ locker room, it’s hardly a topic these days. Coach Fred Hoiberg freely gives medical updates on Nikola Mirotic, but no longer discusses the Oct. 17 altercation during practice that featured Portis punching Mirotic, breaking two bones in his face and sending him to the hospital with a concussion.