devlink: remove unused priv_size

Remove unused and useless priv_size member from struct devlink_ops.

Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/devlink.h b/include/net/devlink.h
index c99ffe8..211bd3c 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -50,7 +50,6 @@
 };
 
 struct devlink_ops {
-	size_t priv_size;
 	int (*port_type_set)(struct devlink_port *devlink_port,
 			     enum devlink_port_type port_type);
 	int (*port_split)(struct devlink *devlink, unsigned int port_index,