The announcement came one day after the school confirmed that Beckman, who was fired as Illinois' football coach last season amid allegations he mistreated players, was working with Tar Heels coach Larry Fedora and the defensive staff, helping break down film and scout.
"I appreciate the opportunity Coach Fedora gave me to stay connected to the sport and be around one of the best staffs in the country," Beckman said in a prepared statement. "His willingness to help a friend was a benefit both personally and professionally. I do not wish to be a further distraction to the team or University and I will no longer serve as a volunteer at UNC. I wish Larry and the program nothing but success going forward."
Fedora took criticism for bringing on Beckman, who was fired by the Fighting Illini on Aug. 28, 2015. A school investigation concluded he influenced medical decisions and pressured players to play hurt. In April, Beckman settled a wrongful termination lawsuit against the school for $250,000.
On Wednesday, Fedora defended the decision to have Beckman work with his staff, saying, "I don't believe everything I read, all right? I know Tim. I know his side of the story also. So I was comfortable with it."
Fedora described the decision as helping a friend. He and Beckman worked together previously at Oklahoma State in 2007.
In a statement released Thursday, Fedora said he and Beckman "agreed his presence had become too much of a distraction."
UNC chancellor Carol L. Folt said she first learned of Beckman's role with the team Wednesday, saying she was "surprised and disappointed."
"The decision for Mr. Beckman to withdraw from his volunteer position was the right thing to do, and moving forward, I don't expect this situation to recur," Folt said in a statement. "I continue to put a great deal of trust in Director of Athletics Bubba Cunningham and Coach Fedora to educate and develop our student-athletes and to ensure we meet the high standards we all expect at Carolina."