[SAMProductions]

Oh well, try updating your a_players.inc (Include),
or simply add this on your a_players.inc (Include);

Code:

native RemoveBuildingForPlayer(playerid, modelid, Float:fX, Float:fY, Float:fZ, Float:fRadius);

Then, after that.
add this at the upper corner of your GameMode "#include <a_players>".