status.i4.v = dio_delete_pdb(device_indices.i4a.r, properties.i2a.r
				     [,errors.i2a.r] [,num_devices.i4.r])

	This routine removes PDBs (and DI/PI entry) from the cached DIO
	scaling database.  This clears it from the program's cache of the
	central database scaling information.
	device_indices	device index or array of device indices
	properties	property index or array of property indices
			(PRREAD -> reading property,
			 PRSET -> setting property,
			 PRBSTS -> basic status property,
			 PRBCTL -> basic control property)
	[errors]	error flag for each device in the list
			(TRUE -> device not removed (not in pool),
			 FALSE -> device removed)
			(default is not to return status for each device)
	[num_devices]	number of devices in list (default is 1)

	This function returns status values as follows:

	OK			success
	positive value		number of devices in error

	This function requires the following include files:

	cnsparam_h, dbprops_h, diolib_h, acnet_errors_h

	Related functions:

	dio_delete_pdb_lst, dio_delete_pdb_all, dio_delete_cache, dio_get_pdb

	C/C++ usage:

	short	errors[NUM_DEVICES];
	short	properties = -PRSET;
	int	status;
	static const int	device_indices[NUM_DEVICES] = {14430, 14431};
	int	num_devices = NUM_DEVICES;

	status = dio_delete_pdb(device_indices,&properties,errors,