Drupal dependency injection on file PathautoAdminDelete.php

+++ b/src/Form/PathautoAdminDelete.php
@@ -56,7 +68,7 @@ class PathautoAdminDelete extends FormBase {
 
     // First we do the "all" case.
-    $storage_helper = \Drupal::service('pathauto.alias_storage_helper');
+    $storage_helper = $this->aliasStorageHelper;
     $total_count = $storage_helper->countAll();
     $form['delete']['all_aliases'] = [

no need to use a local variable anymore then

The patch in #14 correctly replaces all possible \Drupal:: calls in \Drupal\pathauto\Form\PathautoAdminDelete

Thanks.