Revert "See if we can not break all kernel tests"

This reverts commit cadf0e46.

src/CronUpdater.php

@@ -14,15 +14,6 @@ use Drupal\package_manager\Exception\StageValidationException;
  */
 class CronUpdater extends Updater {
 
-  /**
-   * Whether or not cron updates are hard-disabled.
-   *
-   * @var bool
-   *
-   * @todo Remove this when TUF integration is stable.
-   */
-  private static $disabled = TRUE;
-
   /**
    * All automatic updates are disabled.
    *
@@ -149,7 +140,7 @@ class CronUpdater extends Updater {
    *   TRUE if cron updates are disabled, otherwise FALSE.
    */
   private function isDisabled(): bool {
-    return self::$disabled ?: $this->configFactory->get('automatic_updates.settings')->get('cron') === static::DISABLED;
+    return $this->configFactory->get('automatic_updates.settings')->get('cron') === static::DISABLED;
   }
 
 }

tests/src/Kernel/AutomaticUpdatesKernelTestBase.php

@@ -68,14 +68,6 @@ abstract class AutomaticUpdatesKernelTestBase extends PackageManagerKernelTestBa
     // from a sane state.
     // @see \Drupal\automatic_updates\Validator\CronFrequencyValidator
     $this->container->get('state')->set('system.cron_last', time());
-
-    // @todo Remove this when TUF integration is stable.
-    if (class_exists(CronUpdater::class)) {
-      $reflector = new \ReflectionClass(CronUpdater::class);
-      $reflector = $reflector->getProperty('disabled');
-      $reflector->setAccessible(TRUE);
-      $reflector->setValue(NULL, FALSE);
-    }
   }
 
   /**