Clean up some old code

src/Admin/Actions/IndexAction.php

@@ -4,9 +4,8 @@ use Dflydev\FigCookies\FigRequestCookies;
 use Flarum\Api\Client;
 use Flarum\Support\Actor;
 use Flarum\Support\HtmlAction;
-use Session;
-use Config;
 use Psr\Http\Message\ServerRequestInterface as Request;
+use Flarum\Core;
 
 class IndexAction extends HtmlAction
 {
@@ -25,7 +24,6 @@ class IndexAction extends HtmlAction
         $config = app('db')->table('config')->whereIn('key', ['base_url', 'api_url', 'forum_title', 'welcome_title', 'welcome_message'])->lists('value', 'key');
         $data = [];
         $session = [];
-        $alert = Session::get('alert');
 
         if (($user = $this->actor->getUser()) && $user->exists) {
             $session = [
@@ -42,12 +40,11 @@ class IndexAction extends HtmlAction
         }
 
         $view = view('flarum.admin::index')
-            ->with('title', 'Administration - '.Config::get('flarum::forum_title', 'Flarum Demo Forum'))
+            ->with('title', 'Administration - '.Core::config('forum_title'))
             ->with('config', $config)
             ->with('layout', 'flarum.admin::admin')
             ->with('data', $data)
-            ->with('session', $session)
-            ->with('alert', $alert);
+            ->with('session', $session);
 
         $assetManager = app('flarum.admin.assetManager');
         $root = __DIR__.'/../../..';

src/Admin/AdminServiceProvider.php

@@ -2,7 +2,6 @@
 
 use Flarum\Http\RouteCollection;
 use Flarum\Http\UrlGenerator;
-use Flarum\Support\AssetManager;
 use Illuminate\Support\ServiceProvider;
 use Psr\Http\Message\ServerRequestInterface;
 
@@ -15,10 +14,6 @@ class AdminServiceProvider extends ServiceProvider
      */
     public function register()
     {
-        $this->app->singleton('flarum.admin.assetManager', function () {
-            return new AssetManager($this->app->make('files'), public_path('assets'), 'admin');
-        });
-
         $this->app->singleton(
             'Flarum\Http\UrlGeneratorInterface',
             function () {

src/Forum/ForumServiceProvider.php

@@ -14,10 +14,6 @@ class ForumServiceProvider extends ServiceProvider
      */
     public function register()
     {
-        $this->app->singleton('flarum.forum.assetManager', function ($app) {
-            return new AssetManager($app['files'], $app['path.public'].'/assets', 'forum');
-        });
-
         $this->app->singleton(
             'Flarum\Http\UrlGeneratorInterface',
             function () {