An emotional Jim Tomsula expressed genuine concern and compassion for Aldon Smith on Friday morning as he spoke minutes after the 49ers announced that they had released their troubled outside linebacker. “This is a day that doesn’t have anything to do (with) football,” the head coach said, later adding: “We’re not worried about football.” Of course, the reality can’t be avoided for long: The 49ers have to tackle the challenge of replacing one of the NFL’s most dominant pass-rushers.