[media] cx18: remove duplicate CX18_ALSA_DBGFLG_WARN define

The CX18_ALSA_DBGFLG_WARN is cut and pasted twice and we can delete the
second instance.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/pci/cx18/cx18-alsa.h b/drivers/media/pci/cx18/cx18-alsa.h
index 447da37..2718be2 100644
--- a/drivers/media/pci/cx18/cx18-alsa.h
+++ b/drivers/media/pci/cx18/cx18-alsa.h
@@ -49,7 +49,6 @@
 }
 
 #define CX18_ALSA_DBGFLG_WARN  (1 << 0)
-#define CX18_ALSA_DBGFLG_WARN  (1 << 0)
 #define CX18_ALSA_DBGFLG_INFO  (1 << 1)
 
 #define CX18_ALSA_DEBUG(x, type, fmt, args...) \