net: sched: remove unused helpers

tcf_block_dev() doesn't seem to be used anywhere in the tree.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/pkt_cls.h

@@ -65,11 +65,6 @@ static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
 	return block->q;
 }
 
-static inline struct net_device *tcf_block_dev(struct tcf_block *block)
-{
-	return tcf_block_q(block)->dev_queue->dev;
-}
-
 void *tcf_block_cb_priv(struct tcf_block_cb *block_cb);
 struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block,
 					 tc_setup_cb_t *cb, void *cb_ident);
@@ -122,11 +117,6 @@ static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
 	return NULL;
 }
 
-static inline struct net_device *tcf_block_dev(struct tcf_block *block)
-{
-	return NULL;
-}
-
 static inline
 int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb,
 			       void *cb_priv)