net: sched: act_sample: get rid of tcf_sample_walker and tcf_sample_search

tcf_sample_walker() and tcf_sample_search() do the same thing as generic
walk/search function, so remove them.
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/act_sample.c

@@ -240,23 +240,6 @@ static int tcf_sample_dump(struct sk_buff *skb, struct tc_action *a,
 	return -1;
 }
 
-static int tcf_sample_walker(struct net *net, struct sk_buff *skb,
-			     struct netlink_callback *cb, int type,
-			     const struct tc_action_ops *ops,
-			     struct netlink_ext_ack *extack)
-{
-	struct tc_action_net *tn = net_generic(net, act_sample_ops.net_id);
-
-	return tcf_generic_walker(tn, skb, cb, type, ops, extack);
-}
-
-static int tcf_sample_search(struct net *net, struct tc_action **a, u32 index)
-{
-	struct tc_action_net *tn = net_generic(net, act_sample_ops.net_id);
-
-	return tcf_idr_search(tn, a, index);
-}
-
 static void tcf_psample_group_put(void *priv)
 {
 	struct psample_group *group = priv;
@@ -320,8 +303,6 @@ static struct tc_action_ops act_sample_ops = {
 	.dump	  = tcf_sample_dump,
 	.init	  = tcf_sample_init,
 	.cleanup  = tcf_sample_cleanup,
-	.walk	  = tcf_sample_walker,
-	.lookup	  = tcf_sample_search,
 	.get_psample_group = tcf_sample_get_group,
 	.offload_act_setup    = tcf_sample_offload_act_setup,
 	.size	  = sizeof(struct tcf_sample),