code: def delete_pb_devices():
      
      parser = argparse.ArgumentParser(description='Register PB devices.')
      parser.add_argument('num_pb', type=int,
                          help='Number of PBs devices to register.')
      args = parser.parse_args()
  
      log = logging.getLogger('sip.tango_control.subarray')
      tango_db = Database()
      log.info("Deleting PB devices:")
      for index in range(args.num_pb):
          name = 'sip_sdp/pb/{:05d}'.format(index)
          log.info("\t%s", name)
          tango_db.delete_device(name)
docs: Delete PBs devices from the Tango database.