diff --git a/core/modules/system/src/Tests/Installer/ConfigAfterInstallerTestBase.php b/core/modules/system/src/Tests/Installer/ConfigAfterInstallerTestBase.php
index 43d8d48ec4..380e236cd3 100644
--- a/core/modules/system/src/Tests/Installer/ConfigAfterInstallerTestBase.php
+++ b/core/modules/system/src/Tests/Installer/ConfigAfterInstallerTestBase.php
@@ -2,8 +2,6 @@
 
 namespace Drupal\system\Tests\Installer;
 
-@trigger_error(__NAMESPACE__ . '\ConfigAfterInstallerTestBase is deprecated in Drupal 8.6.0 and will be removed before Drupal 9.0.0. Instead, use \Drupal\FunctionalTests\Installer\ConfigAfterInstallerTestBase.', E_USER_DEPRECATED);
-
 use Drupal\Core\Config\FileStorage;
 use Drupal\Core\Config\InstallStorage;
 use Drupal\Core\Config\StorageInterface;
@@ -12,9 +10,6 @@
 
 /**
  * Provides a class for install profiles to check their installed config.
- *
- * @deprecated in Drupal 8.6.0 and will be removed before Drupal 9.0.0.
- *   Use \Drupal\FunctionalTests\Installer\ConfigAfterInstallerTestBase.
  */
 abstract class ConfigAfterInstallerTestBase extends InstallerTestBase {