Bluetooth: Remove unused struct item

num in struct l2cap_chan_list isn't used anywhere.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

include/net/bluetooth/l2cap.h

@@ -280,7 +280,6 @@ struct l2cap_conn_param_update_rsp {
 struct l2cap_chan_list {
 	struct sock	*head;
 	rwlock_t	lock;
-	long		num;
 };
 
 struct l2cap_conn {