staging: comedi: das16: remove unused DAS16_SIZE

This define is not used in the driver. 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>
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index 009c074..577e2a8 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -86,7 +86,6 @@
 #include "8255.h"
 #include "comedi_fc.h"
 
-#define DAS16_SIZE 20		/*  number of ioports */
 #define DAS16_DMA_SIZE 0xff00	/*  size in bytes of allocated dma buffer */
 
 /*