remove un-neccesary use of facade

Author: manan-jadhav

Diff for: src/Jenssegers/Mongodb/MongodbQueueServiceProvider.php

@@ -2,7 +2,6 @@
 
 namespace Jenssegers\Mongodb;
 
-use Illuminate\Support\Facades\DB;
 use Illuminate\Queue\QueueServiceProvider;
 use Jenssegers\Mongodb\Queue\Failed\MongoFailedJobProvider;
 
@@ -14,7 +13,7 @@ class MongodbQueueServiceProvider extends QueueServiceProvider
     protected function registerFailedJobServices()
     {
         // Add compatible queue failer if mongodb is configured.
-        if (DB::connection(config('queue.failed.database'))->getDriverName() == 'mongodb') {
+        if ($this->app['db']->connection(config('queue.failed.database'))->getDriverName() == 'mongodb') {
             $this->app->singleton('queue.failer', function ($app) {
                 return new MongoFailedJobProvider($app['db'], config('queue.failed.database'), config('queue.failed.table'));
             });