diff --git a/server/utils/utils.go b/server/utils/utils.go
index cb168b8e5..ed72327e4 100644
--- a/server/utils/utils.go
+++ b/server/utils/utils.go
@@ -124,11 +124,6 @@ func Sign(a []string) string {
 	return fmt.Sprintf("%x", has)
 }
 
-func Md5(s string) string {
-	has := md5.Sum([]byte(s))
-	return fmt.Sprintf("%x", has)
-}
-
 func Contains(s []string, str string) bool {
 	for _, v := range s {
 		if v == str {