linux-phytec-fsl

Input: wacom_w8001 - simplify w8001_remove

Since touchscreen driver does not handle any events to be sent to the
device we can close serio port first and then unregister the input device.

Tested-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>