cloudinary-8.x-1.x-dev/modules/cloudinary_storage/cloudinary_storage.install

<?php

/**
 * @file
 * Provides installation functions.
 */

/**
 * Implements hook_uninstall().
 */
function cloudinary_storage_uninstall() {
  // Remove unused variables.
  $config = \Drupal::service('config.factory')->getEditable('cloudinary_storage.settings');
  $config->clear('cloudinary_storage_default');
  $config->save();
}