staging: comedi: mite.h: remove PCIMIO_COMPAT

The macro `PCIMIO_COMPAT` is defined, but never used.  Remove it.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/mite.h

@@ -22,8 +22,6 @@
 #include <linux/log2.h>
 #include "../comedi_pci.h"
 
-#define PCIMIO_COMPAT
-
 #define MAX_MITE_DMA_CHANNELS 8
 
 struct mite_dma_descriptor {