Removals by the council of elective officers or of members of boards or commissions shall be made
for either of the following reasons:
(a) For any reason specified by law for removal of city officers by the governor;
(b) Members of boards or commissions may be removed for just cause at the discretion of the council. Such removal of such member of a board or commission shall only be made after due notice to the member affected has been given. Action taken by the council shall be at a regularly scheduled meeting.