Issue #3312340 by Spokje, catch, fathima.asmat: 1.x branch removes...

 */

/**

 * Implements hook_removed_post_updates().

 * Remove obsolete hal.settings configuration key.

 */

function hal_removed_post_updates() {

  return [

    'hal_post_update_delete_settings' => '10.0.0',

  ];

function hal_post_update_delete_settings() {

  \Drupal::configFactory()

    ->getEditable('hal.settings')

    ->clear('bc_file_uri_as_url_normalizer')

    ->save();

}