.../tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php      | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php
index ffd3f23..ec8c352 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php
@@ -11,7 +11,6 @@
 use Drupal\Core\TypedData\Plugin\DataType\IntegerData;
 use Drupal\Core\TypedData\Type\DateTimeInterface;
 use Drupal\datetime\Plugin\Field\FieldType\DateTimeItem;
-use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
 use Drupal\serialization\Normalizer\DateTimeIso8601Normalizer;
 use Drupal\Tests\UnitTestCase;
 use Prophecy\Argument;
@@ -20,10 +19,6 @@
 /**
  * Unit test coverage for the "datetime_iso8601" @DataType.
  *
- * Only tests the "date only" mode of DateTimeIso8601, because everything else
- * is handled by \Drupal\serialization\Normalizer\DateTimeNormalizer, for which
- * we have \Drupal\Tests\serialization\Unit\Normalizer\DateTimeNormalizerTest.
- *
  * @coversDefaultClass \Drupal\serialization\Normalizer\DateTimeIso8601Normalizer
  * @group serialization
  * @see \Drupal\Core\TypedData\Plugin\DataType\DateTimeIso8601