diff --git a/global.go b/global.go
index 2d34590..1daf034 100644
--- a/global.go
+++ b/global.go
@@ -109,8 +109,6 @@ const (
 // errors
 var (
 	ErrNoSuchUserFoundError = errors.New("no such user found")
-	ErrMissLocationHeader   = errors.New("301 response missing Location header")
-	ErrLoginForbiddenError  = errors.New("login forbidden")
 	ErrLoginTimeout         = errors.New("login timeout")
 )
 
diff --git a/parser.go b/parser.go
index 4c01a6b..80ed563 100644
--- a/parser.go
+++ b/parser.go
@@ -47,14 +47,6 @@ func getWebWxDataTicket(cookies []*http.Cookie) string {
 	return ""
 }
 
-func getTotalDuration(delay ...time.Duration) time.Duration {
-	var total time.Duration
-	for _, d := range delay {
-		total += d
-	}
-	return total
-}
-
 // GetFileContentType 获取文件上传的类型
 func GetFileContentType(file multipart.File) (string, error) {
 	data := make([]byte, 512)