diff --git a/core/lib/Drupal/Component/Serialization/YamlPecl.php b/core/lib/Drupal/Component/Serialization/YamlPecl.php
index 9c7397b..2383bf8 100644
--- a/core/lib/Drupal/Component/Serialization/YamlPecl.php
+++ b/core/lib/Drupal/Component/Serialization/YamlPecl.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Component\Serialization\YamlPecl.
- */
-
 namespace Drupal\Component\Serialization;
 
 use Drupal\Component\Serialization\Exception\InvalidDataTypeException;
diff --git a/core/lib/Drupal/Component/Serialization/YamlSymfony.php b/core/lib/Drupal/Component/Serialization/YamlSymfony.php
index 4ca5e25..8818e52 100644
--- a/core/lib/Drupal/Component/Serialization/YamlSymfony.php
+++ b/core/lib/Drupal/Component/Serialization/YamlSymfony.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Component\Serialization\YamlSymfony.
- */
-
 namespace Drupal\Component\Serialization;
 
 use Drupal\Component\Serialization\Exception\InvalidDataTypeException;
diff --git a/core/lib/Drupal/Core/Discovery/YamlDiscovery.php b/core/lib/Drupal/Core/Discovery/YamlDiscovery.php
index d7f17ec..1fdc5aa 100644
--- a/core/lib/Drupal/Core/Discovery/YamlDiscovery.php
+++ b/core/lib/Drupal/Core/Discovery/YamlDiscovery.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Discovery\YamlDiscovery.
- */
-
 namespace Drupal\Core\Discovery;
 
 use Drupal\Component\Discovery\YamlDiscovery as ComponentYamlDiscovery;
diff --git a/core/lib/Drupal/Core/Serialization/Yaml.php b/core/lib/Drupal/Core/Serialization/Yaml.php
index 33a1054..566f8ca 100644
--- a/core/lib/Drupal/Core/Serialization/Yaml.php
+++ b/core/lib/Drupal/Core/Serialization/Yaml.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Serialization\Yaml.
- */
-
 namespace Drupal\Core\Serialization;
 
 use Drupal\Core\Site\Settings;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php b/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php
index e6e4be1..ef0d7fb 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Tests\Component\Serialization\YamlPeclTest.
- */
-
 namespace Drupal\Tests\Component\Serialization;
 
 use Drupal\Component\Serialization\YamlPecl;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php b/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php
index f4029ea..445150a 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Tests\Component\Serialization\YamlSymfonyTest.
- */
-
 namespace Drupal\Tests\Component\Serialization;
 
 use Drupal\Component\Serialization\YamlSymfony;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php b/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php
index aa5fef0..d2b504e 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Tests\Component\Serialization\YamlPeclTest.
- */
-
 namespace Drupal\Tests\Component\Serialization;
 
 /**