iplink_bond_slave: show mii_status only once

With "ip -d link show", bonding slave mii status is displayed
twice, once as a number and once as a name.

Fixes: 730d3f61 ("iplink: add support for bonding slave")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>

ip/iplink_bond_slave.c

@@ -43,7 +43,6 @@ static void print_slave_mii_status(FILE *f, struct rtattr *tb)
 {
 	unsigned int status = rta_getattr_u8(tb);
 
-	fprintf(f, "mii_status %d ", status);
 	if (status >= sizeof(slave_mii_status) / sizeof(slave_mii_status[0]))
 		fprintf(f, "mii_status %d ", status);
 	else