This shows that removing a device should send IRP_MN_SURPRISE_REMOVAL
only, and that it's still possible to use DeviceIoControl on already
opened handles.

IRP_MN_REMOVE_DEVICE should only be sent when all then opened handles
are closed.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>