N.C. Gen. Stat. § 1-518

When the Attorney General has granted leave to a private relator to bring an action in the name of the State to try the title to an office, and it afterwards is shown to the satisfaction of the Attorney General that the bond filed by the private relator is insufficient, or that the sureties are insolvent, the Attorney General may recall and revoke such leave, and upon a certificate of the withdrawal and revocation by the Attorney General to the clerk of the court of the county where the action is pending, it is the duty of the presiding judge, upon motion of the defendant, to dismiss the action.