cacheflush-8.x-1.x-dev/modules/cacheflush_entity/cacheflush_entity.install

<?php

/**
 * @file
 * Cacheflush Entity API install file.
 */

use Drupal\Core\Database\Database;

/**
 * Implements hook_update_N().
 */
function cacheflush_entity_update_8101() {
  Database::getConnection()->schema()->dropField('cacheflush', 'langcode');
}