tty: moxa: drop version dump to logs

The arbitrary MOXA_VERSION is dumped to the logs when the driver is
loaded. Avoid this as a driver should be silent unless something breaks.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250317070046.24386-19-jirislaby@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>