cosmetic: remove some more dead code

router/utils.go

@@ -5,7 +5,6 @@ import (
 	"crypto/rand"
 	"encoding/gob"
 	"fmt"
-	"hash/fnv"
 	"log"
 	"net"
 )
@@ -74,12 +73,6 @@ func randUint64() (r uint64) {
 	return
 }
 
-func hash(s string) uint32 {
-	h := fnv.New32a()
-	h.Write([]byte(s))
-	return h.Sum32()
-}
-
 func GobEncode(items ...interface{}) []byte {
 	buf := new(bytes.Buffer)
 	enc := gob.NewEncoder(buf)