[Validator] removed ftp and ftps from default url protocols

src/Symfony/Component/Validator/Constraints/Url.php

@@ -14,5 +14,5 @@ namespace Symfony\Component\Validator\Constraints;
 class Url extends \Symfony\Component\Validator\Constraint
 {
     public $message = 'This value is not a valid URL';
-    public $protocols = array('http', 'https', 'ftp', 'ftps');
+    public $protocols = array('http', 'https');
 }