clean up rector.php config

Author: samsonasik

rector.php

@@ -5,7 +5,6 @@
 use Rector\CodeQuality\Rector\Array_\CallableThisArrayToAnonymousFunctionRector;
 use Rector\CodingStyle\Rector\ClassMethod\UnSpreadOperatorRector;
 use Rector\Core\Configuration\Option;
-use Rector\Core\ValueObject\PhpVersion;
 use Rector\Privatization\Rector\Class_\FinalizeClassesWithoutChildrenRector;
 use Rector\Set\ValueObject\LevelSetList;
 use Rector\Set\ValueObject\SetList;
@@ -27,7 +26,6 @@
     $parameters->set(Option::PATHS, [__DIR__ . '/config', __DIR__ . '/src', __DIR__ . '/spec']);
 
     $parameters->set(Option::AUTO_IMPORT_NAMES, true);
-    $parameters->set(Option::PHP_VERSION_FEATURES, PhpVersion::PHP_80);
 
     $parameters->set(Option::SKIP, [
         __DIR__ . '/src/Controller',