Revert "bridge: Fix ovs-appctl qos/show repeated queue information"

This reverts commit 6b4d021 ("bridge: Fix ovs-appctl qos/show
repeated queue information"), which is no longer necessary now that
commit 65f3c34c7417 ("netdev: Properly clear 'details' when iterating
in NETDEV_QOS_FOR_EACH.") has been applied.  The former commit fixed
a symptom of the root cause fixed by the latter.

Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>

vswitchd/bridge.c

@@ -3235,7 +3235,6 @@ qos_unixctl_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
             smap_init(&details);
             NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &dump, iface->netdev) {
                 qos_unixctl_show_queue(queue_id, &details, iface, &ds);
-                smap_clear(&details);
             }
             smap_destroy(&details);