AMENDING PROCLAMATION NO. 20, S. 1926 WHICH RESERVED CERTAIN PARCEL OF LAND SITUATED IN THE CITY OF DAVAO FOR WIRELESS STATION PURPOSES BY EXCLUDING FROM ITS OPERATION THE UNUTILIZED PORTIONS OF THE LAND EMBRACED THEREIN AND DECLARING THE SAME OPEN FOR DISPOSITION IN FAVOR OF THE ACTUAL OCCUPANTS UNDER THE PROVISIONS OF THE PUBLIC LAND ACT, AS AMENDED