staging: comedi: addi_apci_1710: delete driver

This driver is seriously broken and most of it does not "work" with
the comedi API. Just remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>