fiu-8.x-2.1-alpha6/fiu.install

<?php

/**
 * @file
 * Install, update, and uninstall functions for the fiu module.
 */

use Drupal\image\Entity\ImageStyle;

/**
 * Implements hook_uninstall().
 */
function fiu_uninstall() {
  ImageStyle::load('fine_image')->delete();
}