cypress-8.x-1.x-dev/cypress.install

<?php

/**
 * Implements hook_uninstall().
 *
 * @return void
 */
function cypress_uninstall() {
  // Remove the config keys set in GraphQLConfigOverrides::loadOverrides().
  /** @var \Drupal\Core\Config\ConfigFactoryInterface $configFactory */
  $configFactory = \Drupal::getContainer()->get('config.factory');
  $languageTypes = $configFactory->getEditable('language.types');
  $negotiation = $languageTypes->get('negotiation');
  foreach (array_keys($negotiation) as $type) {
    unset($negotiation[$type]['enabled']['language-cypress']);
  }
  $languageTypes->set('negotiation', $negotiation)->save();
}