net: switchdev: Remove unused typedef switchdev_obj_dump_cb_t()

Commit 29ab586c ("net: switchdev: Remove bridge bypass support from switchdev")
leave this unused.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230801144209.27512-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

include/net/switchdev.h

@@ -201,8 +201,6 @@ struct switchdev_obj_in_state_mrp {
 #define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \
 	container_of((OBJ), struct switchdev_obj_in_state_mrp, obj)
 
-typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
-
 struct switchdev_brport {
 	struct net_device *dev;
 	const void *ctx;