staging: comedi: ni_pcimio: remove ATMIO and PCIMIO defines

These defines were probably intended to be used so that ni_mio_common.c
could detect if it was included by a driver that uses ioport or memory
mapped register access. This can actually be detected by checking if
the 'mite' member in the private data has been allocated.

Regardless, the symbols are not used. Just remove them.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/ni_pcimio.c

@@ -118,9 +118,6 @@ SCXI is probably broken for m-series boards.
 
 #define PCIDMA
 
-#define PCIMIO 1
-#undef ATMIO
-
 /* These are not all the possible ao ranges for 628x boards.
  They can do OFFSET +- REFERENCE where OFFSET can be
  0V, 5V, APFI<0,1>, or AO<0...3> and RANGE can