net: sched: choke: remove some dead code

We accidentally left this dead code behind after commit 5952fde1
("net: sched: choke: remove dead filter classify code").

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>