diff --git a/core/modules/block/lib/Drupal/block/Plugin/Derivative/ThemeLocalTask.php b/core/modules/block/lib/Drupal/block/Plugin/Derivative/ThemeLocalTask.php
index 426376e..be4cad5 100644
--- a/core/modules/block/lib/Drupal/block/Plugin/Derivative/ThemeLocalTask.php
+++ b/core/modules/block/lib/Drupal/block/Plugin/Derivative/ThemeLocalTask.php
@@ -25,13 +25,6 @@ class ThemeLocalTask extends DerivativeBase implements ContainerDerivativeInterf
    */
   protected $config;
 
- /**
-   * The theme handler to use
-   *
-   * @var \Drupal\Core\Extension\ThemeHandlerInterface
-   */
-  protected $themeHandler;
-
   /**
    * The theme handler.
    *