Discontinuance. In any district, whenever a nonconforming use of land, premises, building or structure, or any part or portion thereof, has been discontinued for a period of one year, such nonconforming use shall not be reestablished, and all future uses shall be in conformity with the provisions of this chapter. Such discontinuance of the active and continuous operation of such nonconforming use, or a part or portion thereof, for such period of one year is hereby construed and considered to be an abandonment of such nonconforming use regardless of any reservation of an intent not to abandon the same or of an intent to resume active operations. If actual abandonment in fact is evidenced by the removal of buildings, structures, machinery, equipment and other evidences of such nonconforming use of the land and premises, the abandonment shall be construed and considered to be completed, and all rights to reestablish or continue such nonconforming use shall thereupon terminate.