The procedure for selling and redeeming for taxes in Covington County, Alabama, shall be the same as provided in Title 40, except that all such duties as are therein required of the judge of probate shall be transferred to and be performed by the revenue commissioner of the county effective October 1, 1991, or as soon thereafter as the revenue commissioner is established by law. Thereupon, the judge of probate shall be relieved of all such duties.