Remove unused const

src/Authorization/AuthorizationException.php

@@ -6,7 +6,6 @@ namespace Dbp\Relay\CoreBundle\Authorization;
 
 class AuthorizationException extends \RuntimeException
 {
-    public const ROLE_UNDEFINED = 1;
     public const PRIVILEGE_UNDEFINED = 2;
     public const ATTRIBUTE_UNDEFINED = 3;
     public const INFINITE_LOOP_DETECTED = 4;