The Council shall be the judge of the election and qualifications of its own members. It may remove any member for gross misconduct, or malfeasance in or disqualification for office, or for conviction of a crime involving moral turpitude, or if declared legally incompetent, or for violation of this Charter, or persistent failure to abide by the rules of the Council; provided that such removal shall not take place without the concurrence of at least two-thirds (2/3) of all remaining members of Council nor until the accused member shall have been notified of the charge against him and given an opportunity to be heard. The accused member shall not vote on the question of his removal.