[BRIDGE]: Fix warning in net-2.6.22

The following is leftover from earlier change in net-2.6.22.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 39b87da..5e1892d 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -88,7 +88,6 @@
 {
 	struct net_bridge *br = netdev_priv(dev);
 	struct sockaddr *addr = p;
-	struct net_bridge_port *port;
 
 	if (!is_valid_ether_addr(addr->sa_data))
 		return -EINVAL;