Apply fixes from StyleCI (#15101)

Co-authored-by: StyleCI Bot <bot@styleci.io>

app/Http/Controllers/Select/PortFieldController.php

@@ -45,7 +45,7 @@ class PortFieldController extends SelectController
     /**
      * Defines fields that can be used as filters
      *
-     * @param $request
+     * @param  $request
      * @return string[]
      */
     protected function filterFields($request)

app/Http/Controllers/Widgets/DeviceTypeController.php

@@ -27,7 +27,6 @@ namespace App\Http\Controllers\Widgets;
 
 use App\Models\Device;
 use Illuminate\Http\Request;
-use LibreNMS\Config;
 use LibreNMS\DB\Eloquent;
 
 class DeviceTypeController extends WidgetController

app/Http/Middleware/LegacyExternalAuth.php

@@ -2,7 +2,6 @@
 
 namespace App\Http\Middleware;
 
-use App\Models\User;
 use Closure;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Auth;

app/Http/Requests/UpdateUserRequest.php

@@ -4,7 +4,6 @@ namespace App\Http\Requests;
 
 use Hash;
 use Illuminate\Foundation\Http\FormRequest;
-use Illuminate\Validation\Validator;
 use LibreNMS\Config;
 
 class UpdateUserRequest extends FormRequest