(2)No pension granted or customarily payable before the commencement of Part III of this Act by the Governor-General in Council or any Local Government on political considerations or compassionate grounds shall be discontinued or reduced, otherwise than in accordance with any grant or order regulating the payment thereof, save on an order of the Governor-General in the exercise of his individual judgment or, as the case may be, of the Governor in the exercise of his individual judgment, and any sum required for the payment of any such pension shall be charged on the revenues of the Federation or, as the case may be, the Province.