Remove Drupal Settings Programmatically

remove-setting.php

<?php

/**
 * @file
 * Remove Drupal 8 Settings.
 */

\Drupal::configFactory()->getEditable('automated_cron.settings')->delete();
// Or.
\Drupal::service('config.factory')->getEditable('automated_cron.settings')->delete();

// ====
// Drush.
// ====
//        drush config - delete "contact.form.personal".
// ====
// Drupal console.
// ====
//        drupal config:delete active "contact.form.personal".