Add: Allow GameScript to demolish without a company

This allows GameScripts to shrink towns as well as grow them.

src/script/api/script_tile.cpp

@@ -262,7 +262,6 @@
 
 /* static */ bool ScriptTile::DemolishTile(TileIndex tile)
 {
-	EnforcePrecondition(false, ScriptObject::GetCompany() != OWNER_DEITY);
 	EnforcePrecondition(false, ::IsValidTile(tile));
 
 	return ScriptObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);