diff --git a/composer-unused.php b/composer-unused.php
deleted file mode 100644
index 3e99c37..0000000
--- a/composer-unused.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-use ComposerUnused\ComposerUnused\Configuration\Configuration;
-use ComposerUnused\ComposerUnused\Configuration\NamedFilter;
-
-return static function (Configuration $config): Configuration {
-    return $config
-        // This is stupid, but if the symfony/mailer is not the production dependencies we will get an exception like
-        // The service "sylius.email_sender" has a dependency on a non-existent service "sylius.email_sender.adapter.symfony_mailer". Did you mean one of these: "sylius.email_renderer.adapter.default", "sylius.email_sender.adapter.default"?
-        // in the test application....
-        ->addNamedFilter(NamedFilter::fromString('symfony/mailer'))
-    ;
-};