(a) When any ordinance repealing a former ordinance, clause or provision shall be itself repealed, such repeal shall not be construed to revive such former ordinance, clause or provision unless it shall be therein so expressly provided.

(b) The repeal of an ordinance shall not affect any punishment or penalty incurred before the repeal took effect, nor any suit, prosecution or proceeding pending at the time of the repeal, for an offense committed or cause of action arising under the ordinance repealed.