diff --git a/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php b/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php
index d14d2af1e9e6d40f185a91a74bcfbdb899ff665f..04623651d2d87bdc761127bb6007b5fbf9d8d533 100644
--- a/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php
+++ b/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php
@@ -59,27 +59,6 @@ abstract class AutomaticUpdatesExtensionsKernelTestBase extends AutomaticUpdates
     }
   }
 
-  /**
-   * Creates a stage object for testing purposes.
-   *
-   * @return \Drupal\automatic_updates_extensions\ExtensionUpdater
-   *   A stage object, with test-only modifications.
-   */
-  protected function createUpdater(): ExtensionUpdater {
-    return new TestExtensionUpdater(
-      $this->container->get('config.factory'),
-      $this->container->get('package_manager.path_locator'),
-      $this->container->get('package_manager.beginner'),
-      $this->container->get('package_manager.stager'),
-      $this->container->get('package_manager.committer'),
-      $this->container->get('file_system'),
-      $this->container->get('event_dispatcher'),
-      $this->container->get('tempstore.shared'),
-      $this->container->get('datetime.time'),
-      new TestPathFactory()
-    );
-  }
-
   /**
    * The client.
    *