<?php
use \Drupal\Core\Form\FormStateInterface;

function asc_adminimal_form_user_cancel_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  // Don't allow delet users or content when disabling an account
  unset($form['user_cancel_method']['#options']['user_cancel_block_unpublish']);
  unset($form['user_cancel_method']['#options']['user_cancel_reassign']);
  unset($form['user_cancel_method']['#options']['user_cancel_delete']);
  unset($form['user_cancel_confirm']);
}

function asc_adminimal_form_user_multiple_cancel_confirm_alter(&$form, FormStateInterface $form_state, $form_id) {
  // Don't allow delet users or content when disabling an account
  unset($form['user_cancel_method']['#options']['user_cancel_block_unpublish']);
  unset($form['user_cancel_method']['#options']['user_cancel_reassign']);
  unset($form['user_cancel_method']['#options']['user_cancel_delete']);
  unset($form['user_cancel_confirm']);
}