re-apply 03d13cf

Author: dannyvankooten

src/Validator.php

@@ -41,7 +41,6 @@ class Validator
         'SE' => '\d{12}',
         'SI' => '\d{8}',
         'SK' => '\d{10}',
-        'SM' => '\d{5}',
         'XI' => '(\d{3} ?\d{4} ?\d{2}( ?\d{3})?|[A-Z\d]{5})',
     ];