diff --git a/core/lib/Drupal/Core/Template/TwigEnvironment.php b/core/lib/Drupal/Core/Template/TwigEnvironment.php
index 6ea8cd5..34620a5 100644
--- a/core/lib/Drupal/Core/Template/TwigEnvironment.php
+++ b/core/lib/Drupal/Core/Template/TwigEnvironment.php
@@ -31,13 +31,6 @@ class TwigEnvironment extends \Twig_Environment {
   protected $templateClasses;
 
   /**
-   * The string loader implementation used for inline template rendering.
-   *
-   * @var \Twig_Loader_String
-   */
-  protected $stringLoader;
-
-  /**
    * Constructs a TwigEnvironment object and stores cache and storage
    * internally.
    */