A director may be removed from office by the affirmative vote of not less than a majority of the members present and voting at any regular or special meeting called for that purpose or, where the bylaws provide for the election of directors by districts, by the affirmative vote of not less than a majority of the members or delegates residing in or representing the district from which he was elected. The bylaws shall provide for the filing of charges, the giving of notice thereof, an opportunity to be heard and the procedures under which a director may be removed.