net: pkt_cls: Remove unused inline helpers

Commit acb674428c3d ("net: sched: introduce per-block callbacks")
implemented these but never used it.

Signed-off-by: Yue Haibing <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/net/pkt_cls.h

···
 	return NULL;
 }
 
-static inline
-int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb,
-			       void *cb_priv)
-{
-	return 0;
-}
-
-static inline
-void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb,
-				  void *cb_priv)
-{
-}
-
 static inline int tcf_classify(struct sk_buff *skb,
 			       const struct tcf_block *block,
 			       const struct tcf_proto *tp,