diff -u b/core/modules/content_translation/src/Tests/ContentTranslationUITest.php b/core/modules/content_translation/src/Tests/ContentTranslationUITest.php
--- b/core/modules/content_translation/src/Tests/ContentTranslationUITest.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationUITest.php
@@ -8,7 +8,6 @@
 namespace Drupal\content_translation\Tests;
 
 use Drupal\Core\Entity\EntityInterface;
-use Drupal\Core\Field\Entity\BaseFieldOverride;
 use Drupal\Core\Language\Language;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\Core\Url;
diff -u b/core/modules/system/src/Tests/Entity/ContentEntityChangedTest.php b/core/modules/system/src/Tests/Entity/ContentEntityChangedTest.php
--- b/core/modules/system/src/Tests/Entity/ContentEntityChangedTest.php
+++ b/core/modules/system/src/Tests/Entity/ContentEntityChangedTest.php
@@ -7,9 +7,7 @@
 
 namespace Drupal\system\Tests\Entity;
 
-use Drupal\Core\Entity\EntityStorageException;
 use Drupal\language\Entity\ConfigurableLanguage;
-use Drupal\user\UserInterface;
 
 /**
  * Tests basic EntityChangedInterface functionality.
diff -u b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRevChanged.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRevChanged.php
--- b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRevChanged.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRevChanged.php
@@ -9,7 +9,6 @@
 
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Field\BaseFieldDefinition;
-use Drupal\entity_test\Entity\EntityTestRev;
 
 /**
  * Defines the test entity class.