diff --git a/core/modules/field/lib/Drupal/field/Plugin/Type/Widget/WidgetPluginManager.php b/core/modules/field/lib/Drupal/field/Plugin/Type/Widget/WidgetPluginManager.php
index 97e2045..fe27fa8 100644
--- a/core/modules/field/lib/Drupal/field/Plugin/Type/Widget/WidgetPluginManager.php
+++ b/core/modules/field/lib/Drupal/field/Plugin/Type/Widget/WidgetPluginManager.php
@@ -55,8 +55,6 @@ class WidgetPluginManager extends DefaultPluginManager {
   public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler, LanguageManager $language_manager) {
     parent::__construct('field/widget', $namespaces);
 
-    $this->discovery = new ProcessDecorator($this->discovery, array($this, 'processDefinition'));
-
     $this->setCacheBackend($cache_backend, $language_manager, 'field_widget_types');
     $this->alterInfo($module_handler, 'field_widget_info');