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Configurable

DeprecationHelperRemoveRector

Remove DeprecationHelper calls for versions before configured minimum requirement

 $settings = [];
 $filename = 'simple_filename.yaml';
-DeprecationHelper::backwardsCompatibleCall(\Drupal::VERSION, '9.1.0', fn() => new_function(), fn() => old_function());
-DeprecationHelper::backwardsCompatibleCall(\Drupal::VERSION, '10.5.0', fn() => SettingsEditor::rewrite($filename, $settings), fn() => drupal_rewrite_settings($settings, $filename));
+drupal_rewrite_settings($settings, $filename);
 DeprecationHelper::backwardsCompatibleCall(\Drupal::VERSION, '11.1.0', fn() => new_function(), fn() => old_function());

Configure your rector.php:

<?php

use DrupalRector\Rector\Deprecation\DeprecationHelperRemoveRector;
use DrupalRector\Rector\ValueObject\DeprecationHelperRemoveConfiguration;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withConfiguredRule(DeprecationHelperRemoveRector::class, [
        new DeprecationHelperRemoveConfiguration('10.5.0'),
    ]);