Drop unused function use statements.

src/Listener/Dca/MapDcaListener.php

@@ -25,10 +25,8 @@ use Netzmacht\Contao\Toolkit\Dca\Listener\AbstractListener;
 use Netzmacht\Contao\Toolkit\Dca\Manager;
 use Netzmacht\Contao\Toolkit\Dca\Options\OptionsBuilder;
 use PDO;
-use function strlen;
 use Symfony\Component\HttpFoundation\Session\Session;
 use Symfony\Component\Translation\TranslatorInterface as Translator;
-use function var_dump;
 
 /**
  * Class Map is the helper class for the tl_leaflet_map dca.

src/Model/MarkerModel.php

@@ -17,7 +17,6 @@ use Netzmacht\Contao\Leaflet\Filter\BboxFilter;
 use Netzmacht\Contao\Leaflet\Filter\DistanceFilter;
 use Netzmacht\Contao\Leaflet\Filter\Filter;
 use Netzmacht\LeafletPHP\Value\LatLngBounds;
-use function var_dump;
 
 /**
  * Class MarkerModel for the tl_leaflet_marker table.