diff -u b/core/modules/datetime/src/Plugin/migrate/field/DateField.php b/core/modules/datetime/src/Plugin/migrate/field/DateField.php
--- b/core/modules/datetime/src/Plugin/migrate/field/DateField.php
+++ b/core/modules/datetime/src/Plugin/migrate/field/DateField.php
@@ -5,7 +5,6 @@
 use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\MigrateException;
-use Drupal\migrate\Row;
 use Drupal\migrate_drupal\Plugin\migrate\field\FieldPluginBase;
 
 /**