Any surplus of funds which remain in the hands of the county treasurer or other custodian of the fine and forfeiture fund or in the hands of any officer of court or other person as agent or representative of any officer of court after all legal claims against the fund have been paid or are barred by limitation shall be paid over into the general fund of the county treasury to be used by the county for the purpose of paying the expenses of courts, the maintenance and support of prisoners, paying sheriffs and coroners for litigation, and paying all legal demands of clerks of court, prosecuting officers, sheriffs, and other officers of court.