Issue #3086495 by wundo: Remove old function

captcha.admin.inc

@@ -5,41 +5,6 @@
  * Functionality and helper functions for CAPTCHA administration.
  */
 
-/**
- * Return an array with the available CAPTCHA types.
- *
- * For use as options array for a select form elements.
- *
- * @param bool $add_special_options
- *   If true: also add the 'default' option.
- *
- * @return array
- *   An associative array mapping "$module/$type" to
- *   "$type (from module $module)" with $module the module name
- *   implementing the CAPTCHA and $type the name of the CAPTCHA type.
- */
-function _captcha_available_challenge_types($add_special_options = TRUE) {
-  $captcha_types = [];
-  if ($add_special_options) {
-    $captcha_types['default'] = t('Default challenge type');
-  }
-
-  // We do our own version of Drupal's module_invoke_all() here because
-  // we want to build an array with custom keys and values.
-  foreach (\Drupal::moduleHandler()->getImplementations('captcha') as $module) {
-    $result = call_user_func_array($module . '_captcha', ['list']);
-    if (is_array($result)) {
-      foreach ($result as $type) {
-        $captcha_types["$module/$type"] = t('@type (from module @module)', [
-          '@type' => $type,
-          '@module' => $module,
-        ]);
-      }
-    }
-  }
-  return $captcha_types;
-}
-
 /**
  * Helper function for generating an example challenge.
  */