staging: comedi: addi-data: remove ERROR and SUCCESS defines

These are not used. Remove them.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/addi-data/addi_common.h

@@ -18,9 +18,6 @@
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 
-#define ERROR	-1
-#define SUCCESS	1
-
 #define LOBYTE(W)	(unsigned char)((W) & 0xFF)
 #define HIBYTE(W)	(unsigned char)(((W) >> 8) & 0xFF)
 #define MAKEWORD(H, L)	(unsigned short)((L) | ((H) << 8))