class OrphanClass
 {
     public function __construct()
     {
-         parent::__construct();
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\StaticCall\RemoveParentCallWithoutParentRector;

return RectorConfig::configure()
    ->withRules([
        RemoveParentCallWithoutParentRector::class,
    ]);

SETS:  PHP 8.0 Dead Code