USB: cdc-acm: drop redundant driver-data reset

There's no need to clear the interface driver data on failed probe (and
driver core will clear it anyway).

Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210322155318.9837-5-johan@kernel.org


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