diff --git a/core/lib/Drupal/Core/Ajax/AddCssCommand.php b/core/lib/Drupal/Core/Ajax/AddCssCommand.php
index c5a0208..f7d1677 100644
--- a/core/lib/Drupal/Core/Ajax/AddCssCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AddCssCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * An AJAX command for adding css to the page via ajax.
  *
diff --git a/core/lib/Drupal/Core/Ajax/AfterCommand.php b/core/lib/Drupal/Core/Ajax/AfterCommand.php
index ae27030..05cf95c 100644
--- a/core/lib/Drupal/Core/Ajax/AfterCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AfterCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\InsertCommand;
-
 /**
  * An AJAX command for calling the jQuery after() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/AjaxResponse.php b/core/lib/Drupal/Core/Ajax/AjaxResponse.php
index c2e8967..6772341 100644
--- a/core/lib/Drupal/Core/Ajax/AjaxResponse.php
+++ b/core/lib/Drupal/Core/Ajax/AjaxResponse.php
@@ -7,15 +7,10 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Asset\AttachedAssets;
 use Drupal\Core\Render\BubbleableMetadata;
-use Drupal\Core\Render\Renderer;
 use Drupal\Core\Render\AttachmentsInterface;
 use Drupal\Core\Render\AttachmentsTrait;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
 
 /**
  * JSON response object for AJAX requests.
diff --git a/core/lib/Drupal/Core/Ajax/AlertCommand.php b/core/lib/Drupal/Core/Ajax/AlertCommand.php
index 65a9f46..dbfb0d5 100644
--- a/core/lib/Drupal/Core/Ajax/AlertCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AlertCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * AJAX command for a javascript alert box.
  *
diff --git a/core/lib/Drupal/Core/Ajax/AppendCommand.php b/core/lib/Drupal/Core/Ajax/AppendCommand.php
index 041f794..26061b2 100644
--- a/core/lib/Drupal/Core/Ajax/AppendCommand.php
+++ b/core/lib/Drupal/Core/Ajax/AppendCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\InsertCommand;
-
 /**
  * An AJAX command for calling the jQuery append() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/BeforeCommand.php b/core/lib/Drupal/Core/Ajax/BeforeCommand.php
index 8d52628..7bf8f41 100644
--- a/core/lib/Drupal/Core/Ajax/BeforeCommand.php
+++ b/core/lib/Drupal/Core/Ajax/BeforeCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\InsertCommand;
-
 /**
  * An AJAX command for calling the jQuery before() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/ChangedCommand.php b/core/lib/Drupal/Core/Ajax/ChangedCommand.php
index 7f30972..ec92f68 100644
--- a/core/lib/Drupal/Core/Ajax/ChangedCommand.php
+++ b/core/lib/Drupal/Core/Ajax/ChangedCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * An AJAX command for marking HTML elements as changed.
  *
diff --git a/core/lib/Drupal/Core/Ajax/CloseModalDialogCommand.php b/core/lib/Drupal/Core/Ajax/CloseModalDialogCommand.php
index 46d0080..64973ae 100644
--- a/core/lib/Drupal/Core/Ajax/CloseModalDialogCommand.php
+++ b/core/lib/Drupal/Core/Ajax/CloseModalDialogCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CloseDialogCommand;
-
 /**
  * Defines an AJAX command that closes the currently visible modal dialog.
  *
diff --git a/core/lib/Drupal/Core/Ajax/CssCommand.php b/core/lib/Drupal/Core/Ajax/CssCommand.php
index 1a14a40..24766f3 100644
--- a/core/lib/Drupal/Core/Ajax/CssCommand.php
+++ b/core/lib/Drupal/Core/Ajax/CssCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * An AJAX command for calling the jQuery css() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/DataCommand.php b/core/lib/Drupal/Core/Ajax/DataCommand.php
index a495f71..4604bf2 100644
--- a/core/lib/Drupal/Core/Ajax/DataCommand.php
+++ b/core/lib/Drupal/Core/Ajax/DataCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * An AJAX command for implementing jQuery's data() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/HtmlCommand.php b/core/lib/Drupal/Core/Ajax/HtmlCommand.php
index cbae08e..96a8d33 100644
--- a/core/lib/Drupal/Core/Ajax/HtmlCommand.php
+++ b/core/lib/Drupal/Core/Ajax/HtmlCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\InsertCommand;
-
 /**
  * AJAX command for calling the jQuery html() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/InsertCommand.php b/core/lib/Drupal/Core/Ajax/InsertCommand.php
index 05a7fd1..8c477f5 100644
--- a/core/lib/Drupal/Core/Ajax/InsertCommand.php
+++ b/core/lib/Drupal/Core/Ajax/InsertCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * Generic AJAX command for inserting content.
  *
diff --git a/core/lib/Drupal/Core/Ajax/InvokeCommand.php b/core/lib/Drupal/Core/Ajax/InvokeCommand.php
index 8c03210..6c1d16e 100644
--- a/core/lib/Drupal/Core/Ajax/InvokeCommand.php
+++ b/core/lib/Drupal/Core/Ajax/InvokeCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * AJAX command for invoking an arbitrary jQuery method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/OpenDialogCommand.php b/core/lib/Drupal/Core/Ajax/OpenDialogCommand.php
index d373cf8..3c351fd 100644
--- a/core/lib/Drupal/Core/Ajax/OpenDialogCommand.php
+++ b/core/lib/Drupal/Core/Ajax/OpenDialogCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * Defines an AJAX command to open certain content in a dialog.
  *
diff --git a/core/lib/Drupal/Core/Ajax/OpenModalDialogCommand.php b/core/lib/Drupal/Core/Ajax/OpenModalDialogCommand.php
index e9b2c4f..519d192 100644
--- a/core/lib/Drupal/Core/Ajax/OpenModalDialogCommand.php
+++ b/core/lib/Drupal/Core/Ajax/OpenModalDialogCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\OpenDialogCommand;
-
 /**
  * Defines an AJAX command to open certain content in a dialog in a modal dialog.
  *
diff --git a/core/lib/Drupal/Core/Ajax/PrependCommand.php b/core/lib/Drupal/Core/Ajax/PrependCommand.php
index c6cc036..0ccc6d8 100644
--- a/core/lib/Drupal/Core/Ajax/PrependCommand.php
+++ b/core/lib/Drupal/Core/Ajax/PrependCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\InsertCommand;
-
 /**
  * AJAX command for calling the jQuery insert() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/RedirectCommand.php b/core/lib/Drupal/Core/Ajax/RedirectCommand.php
index f7d05e1..cd4c6d5 100644
--- a/core/lib/Drupal/Core/Ajax/RedirectCommand.php
+++ b/core/lib/Drupal/Core/Ajax/RedirectCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * Defines an AJAX command to set the window.location, loading that URL.
  *
diff --git a/core/lib/Drupal/Core/Ajax/RemoveCommand.php b/core/lib/Drupal/Core/Ajax/RemoveCommand.php
index f4e6bbe..5131b20 100644
--- a/core/lib/Drupal/Core/Ajax/RemoveCommand.php
+++ b/core/lib/Drupal/Core/Ajax/RemoveCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * AJAX command for calling the jQuery remove() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/ReplaceCommand.php b/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
index b8cc881..615f4eb 100644
--- a/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
+++ b/core/lib/Drupal/Core/Ajax/ReplaceCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\InsertCommand;
-
 /**
  * AJAX command for calling the jQuery replace() method.
  *
diff --git a/core/lib/Drupal/Core/Ajax/RestripeCommand.php b/core/lib/Drupal/Core/Ajax/RestripeCommand.php
index 834e555..711950f 100644
--- a/core/lib/Drupal/Core/Ajax/RestripeCommand.php
+++ b/core/lib/Drupal/Core/Ajax/RestripeCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * AJAX command for resetting the striping on a table.
  *
diff --git a/core/lib/Drupal/Core/Ajax/SetDialogTitleCommand.php b/core/lib/Drupal/Core/Ajax/SetDialogTitleCommand.php
index 9a2c5ac..d4021cc 100644
--- a/core/lib/Drupal/Core/Ajax/SetDialogTitleCommand.php
+++ b/core/lib/Drupal/Core/Ajax/SetDialogTitleCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\SetDialogOptionCommand;
-
 /**
  * Defines an AJAX command that sets jQuery UI dialog properties.
  *
diff --git a/core/lib/Drupal/Core/Ajax/SettingsCommand.php b/core/lib/Drupal/Core/Ajax/SettingsCommand.php
index e334770..b4ba8cd 100644
--- a/core/lib/Drupal/Core/Ajax/SettingsCommand.php
+++ b/core/lib/Drupal/Core/Ajax/SettingsCommand.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\Core\Ajax;
 
-use Drupal\Core\Ajax\CommandInterface;
-
 /**
  * AJAX command for adjusting Drupal's JavaScript settings.
  *