IPoIB: Remove unused local_rate tracking

Now that low-level drivers handle the conversion from an absolute rate
to a relative rate, there's no need for the IPoIB driver to keep track
of the local port's data rate.
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/ulp/ipoib/ipoib.h

@@ -219,7 +219,6 @@ struct ipoib_dev_priv {
 
 	union ib_gid local_gid;
 	u16          local_lid;
-	u8           local_rate;
 
 	unsigned int admin_mtu;
 	unsigned int mcast_mtu;

drivers/infiniband/ulp/ipoib/ipoib_multicast.c

@@ -527,11 +527,9 @@ void ipoib_mcast_join_task(struct work_struct *work)
 	{
 		struct ib_port_attr attr;
 
-		if (!ib_query_port(priv->ca, priv->port, &attr)) {
+		if (!ib_query_port(priv->ca, priv->port, &attr))
 			priv->local_lid = attr.lid;
-			priv->local_rate = attr.active_speed *
-				ib_width_enum_to_int(attr.active_width);
-		} else
+		else
 			ipoib_warn(priv, "ib_query_port failed\n");
 	}