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>
diff --git a/ip/iplink_bond_slave.c b/ip/iplink_bond_slave.c
index bb4e1d6..8f3fc6c 100644
--- a/ip/iplink_bond_slave.c
+++ b/ip/iplink_bond_slave.c
@@ -43,7 +43,6 @@
 {
 	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