The county board is empowered to find by resolution the nonexistence of a necessity in such county for organized legal aid. Within ten days after the passage of such a resolution the county board shall cause a certified copy to be transmitted to the bar board. Upon receipt of a certified copy of such resolution the bar board is empowered and, within sixty days thereafter, is obligated to discontinue the legal aid bureau—unless it is subsequently maintained in the discretion of the bar board and financed by funds other than county funds. Nothing in this chapter shall prevent a county board from adopting successive resolutions declaring the existence or nonexistence of a necessity for organized legal aid, but no bureau actually created as a result of such a resolution shall be discontinued by a resolution of revocation within sixty days thereafter.