small fix and cleanup

Author: ctf0

src/SimpleMenu.php

@@ -25,7 +25,9 @@ public function __construct()
         $this->listFileDir  = config('simpleMenu.routeListPath');
         $this->localeCodes  = array_keys(LaravelLocalization::getSupportedLocales());
 
-        static::create_LFD($this->listFileDir);
+        if ($this->listFileDir) {
+            static::create_LFD($this->listFileDir);
+        }
 
         if (!app()->runningInConsole()) {
             // create caches

src/SimpleMenuServiceProvider.php

@@ -19,8 +19,6 @@ class SimpleMenuServiceProvider extends ServiceProvider
 {
     protected $packagesSP = [
         \Baum\Providers\BaumServiceProvider::class,
-        \Spatie\Translatable\TranslatableServiceProvider::class,
-        \Spatie\Permission\PermissionServiceProvider::class,
         \Mcamara\LaravelLocalization\LaravelLocalizationServiceProvider::class,
     ];