diff --git a/core/lib/Drupal/Core/Entity/Display/EntityFormDisplayInterface.php b/core/lib/Drupal/Core/Entity/Display/EntityFormDisplayInterface.php
index 9bc7b52..d502c7e 100644
--- a/core/lib/Drupal/Core/Entity/Display/EntityFormDisplayInterface.php
+++ b/core/lib/Drupal/Core/Entity/Display/EntityFormDisplayInterface.php
@@ -89,7 +89,8 @@
    * @endcode
    *
    * Additionally, some processing data is placed in $form_state, and can be
-   * accessed by $widget::getWidgetState() and setWidgetState().
+   * accessed by \Drupal\Core\Field\WidgetBaseInterface::getWidgetState() and
+   * \Drupal\Core\Field\WidgetBaseInterface::setWidgetState().
    *
    * @param \Drupal\Core\Entity\ContentEntityInterface $entity
    *   The entity.
diff --git a/core/modules/field/field.form.inc b/core/modules/field/field.form.inc
deleted file mode 100644
index 84c37ef..0000000
--- a/core/modules/field/field.form.inc
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-/**
- * @file
- * Field forms management.
- */
-
-use Drupal\Component\Utility\NestedArray;
-
-
-
diff --git a/core/modules/field/field.module b/core/modules/field/field.module
index 4726101..960aff1 100644
--- a/core/modules/field/field.module
+++ b/core/modules/field/field.module
@@ -16,7 +16,7 @@
  * mechanism for auto-loading core APIs, so we have to load them on
  * every page request.
  */
-require_once __DIR__ . '/field.form.inc';
+
 require_once __DIR__ . '/field.purge.inc';
 
 /**