rigctl/ritgctld debug message too verbose

[mdblack98]

rigctl -m 2 --vfo -vvvv -Z f VFOA m VFOA t VFOA

Causes a message in rigctld every time it's run so eventually clears out any other debug messages.
2021-05-05:14:55:01.235197: handle_socket: rigctl_parse retcode=1
2021-05-05:14:55:04.071353: handle_socket: rigctl_parse retcode=1
2021-05-05:14:55:29.142526: handle_socket: rigctl_parse retcode=1
2021-05-05:14:57:33.590392: handle_socket: rigctl_parse retcode=1
2021-05-05:14:57:37.158247: handle_socket: rigctl_parse retcode=1