p2p/*: remove unused functions

p2p/discover/table_util_test.go

@@ -17,7 +17,6 @@
 package discover
 
 import (
-	"crypto/ecdsa"
 	"encoding/hex"
 	"fmt"
 	"math/rand"
@@ -167,11 +166,3 @@ func hexEncPubkey(h string) (ret encPubkey) {
 	copy(ret[:], b)
 	return ret
 }
-
-func hexPubkey(h string) *ecdsa.PublicKey {
-	k, err := decodePubkey(hexEncPubkey(h))
-	if err != nil {
-		panic(err)
-	}
-	return k
-}

p2p/enode/nodedb.go

@@ -172,14 +172,6 @@ func splitNodeItemKey(key []byte) (id ID, ip net.IP, field string) {
 	return id, ip, field
 }
 
-// localItemKey returns the key of a local node item.
-func localItemKey(id ID, field string) []byte {
-	key := append([]byte(dbLocalPrefix), id[:]...)
-	key = append(key, ':')
-	key = append(key, field...)
-	return key
-}
-
 // fetchInt64 retrieves an integer associated with a particular key.
 func (db *DB) fetchInt64(key []byte) int64 {
 	blob, err := db.lvl.Get(key, nil)