staging: comedi: c6xdigio: remove C6XDIGIO_SIZE

This define is only used in the comedi_request_region() call and does
not add any additional clarity to the code. 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>

drivers/staging/comedi/drivers/c6xdigio.c

@@ -43,8 +43,6 @@ This driver will not work with a 2.4 kernel.
 
 #include "../comedidev.h"
 
-#define C6XDIGIO_SIZE 3
-
 /*
  * port offsets
  */
@@ -356,7 +354,7 @@ static int c6xdigio_attach(struct comedi_device *dev,
 	struct comedi_subdevice *s;
 	int ret;
 
-	ret = comedi_request_region(dev, it->options[0], C6XDIGIO_SIZE);
+	ret = comedi_request_region(dev, it->options[0], 0x03);
 	if (ret)
 		return ret;