fix: removed unnecessary cast so we can mock ValidationErrors (#980) (#981)

Author: joselitofilho

errors.go

@@ -44,12 +44,9 @@ func (ve ValidationErrors) Error() string {
 
 	buff := bytes.NewBufferString("")
 
-	var fe *fieldError
-
 	for i := 0; i < len(ve); i++ {
 
-		fe = ve[i].(*fieldError)
-		buff.WriteString(fe.Error())
+		buff.WriteString(ve[i].Error())
 		buff.WriteString("\n")
 	}