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 two years, such nonconforming use shall not thereafter be reestablished, and all future use shall be in conformity with the provisions of this chapter. Such discontinuance of this active and continuous operation of such nonconforming use, or a part or portion thereof, for such period of two years is hereby construed and considered to be an abandonment of such nonconforming use, regardless of any reservation of an intent not to abandon 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 within a period of less than two years, and all rights to reestablish or continue such nonconforming use shall thereupon terminate.