code: public static boolean unregister(String name) {
  		Iterator<IpCamDevice> di = DEVICES.iterator();
  		while (di.hasNext()) {
  			IpCamDevice d = di.next();
  			if (d.getName().equals(name)) {
  				di.remove();
  				rescan();
  				return true;
  			}
  		}
  		return false;
  	}
docs: Unregister IP camera with given name.
  
  @param name the name of IP camera to be unregister
  @return True if device has been registered, false otherwise