Remove old use-statements

lib/SimpleSAML/XHTML/Template.php

@@ -18,8 +18,6 @@ use SimpleSAML\Locale\Translate;
 use SimpleSAML\Locale\TwigTranslator;
 use SimpleSAML\Logger;
 use SimpleSAML\Module;
-use SimpleSAML\TwigConfigurableI18n\Twig\Environment as Twig_Environment;
-use SimpleSAML\TwigConfigurableI18n\Twig\Extensions\Extension\I18n as Twig_Extensions_Extension_I18n;
 use SimpleSAML\Utils;
 use Symfony\Bridge\Twig\Extension\TranslationExtension;
 use Symfony\Component\HttpFoundation\Response;