Unused use removed

Plugin.php

@@ -5,6 +5,7 @@ use System\Classes\PluginBase;
 use App;
 use Config;
 use Illuminate\Database\DatabaseManager;
+use Illuminate\Support\Facades\Broadcast;
 use Illuminate\Foundation\AliasLoader;
 use GermanAirlinesVa\Graphql\Classes\GraphqlServiceProvider;
 use Nuwave\Lighthouse\Subscriptions\SubscriptionServiceProvider;
@@ -43,7 +44,7 @@ class Plugin extends PluginBase
     $this->app->singleton(DatabaseManager::class, function ($app) {
       return $app->make('db');
     });
-    \Illuminate\Support\Facades\Broadcast::routes([
+    Broadcast::routes([
       'prefix' => '',
       'middleware' => 'GermanAirlinesVA\\Graphql\\Classes\\Authentication',
     ]);