batman-adv: remove unused variable from orig_node struct

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>

net/batman-adv/types.h

@@ -119,7 +119,6 @@ struct batadv_orig_node {
 	spinlock_t ogm_cnt_lock;
 	/* bcast_seqno_lock protects bcast_bits, last_bcast_seqno */
 	spinlock_t bcast_seqno_lock;
-	spinlock_t tt_list_lock; /* protects tt_list */
 	atomic_t bond_candidates;
 	struct list_head bond_list;
 };