[media] siano: remove the ir protocol field

This field is unused. Remove it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/common/siano/smsir.h b/drivers/media/common/siano/smsir.h
index 69b59b9..fc8b792 100644
--- a/drivers/media/common/siano/smsir.h
+++ b/drivers/media/common/siano/smsir.h
@@ -40,7 +40,6 @@
 	char phys[32];
 
 	char *rc_codes;
-	u64 protocol;
 
 	u32 timeout;
 	u32 controller;