[IRDA]: irda_create() nuke user triggable printk

easy to trigger as user with sfuzz.

irda_create() is quiet on unknown sock->type,
match this behaviour for SOCK_DGRAM unknown protocol
Signed-off-by: Nmaximilian attems <max@stro.at>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/irda/af_irda.c

@@ -1118,8 +1118,6 @@ static int irda_create(struct net *net, struct socket *sock, int protocol)
 			self->max_sdu_size_rx = TTP_SAR_UNBOUND;
 			break;
 		default:
-			IRDA_ERROR("%s: protocol not supported!\n",
-				   __FUNCTION__);
 			return -ESOCKTNOSUPPORT;
 		}
 		break;