diff --git a/core/modules/migrate/src/Plugin/migrate/destination/EntityContentBase.php b/core/modules/migrate/src/Plugin/migrate/destination/EntityContentBase.php
index bcee94a83d..9d5e231c3f 100644
--- a/core/modules/migrate/src/Plugin/migrate/destination/EntityContentBase.php
+++ b/core/modules/migrate/src/Plugin/migrate/destination/EntityContentBase.php
@@ -140,10 +140,6 @@ public function __construct(array $configuration, $plugin_id, $plugin_definition
     parent::__construct($configuration, $plugin_id, $plugin_definition, $migration, $storage, $bundles);
     $this->entityFieldManager = $entity_field_manager;
     $this->fieldTypeManager = $field_type_manager;
-    if ($account_switcher === NULL) {
-      @trigger_error('Calling ' . __NAMESPACE__ . '\EntityContentBase::__construct() without the $account_switcher argument is deprecated in drupal:9.3.0 and will be required in drupal:10.0.0. See https://www.drupal.org/node/3142975', E_USER_DEPRECATED);
-      $account_switcher = \Drupal::service('account_switcher');
-    }
     $this->accountSwitcher = $account_switcher;
   }
 
diff --git a/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php b/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php
index b5fb3ec250..aa0a49ccdb 100644
--- a/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php
+++ b/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php
@@ -304,24 +304,4 @@ public function testStubRows() {
     }
   }
 
-  /**
-   * Test BC injection of account switcher service.
-   *
-   * @group legacy
-   */
-  public function testAccountSwitcherBackwardsCompatibility() {
-    $this->expectDeprecation('Calling Drupal\migrate\Plugin\migrate\destination\EntityContentBase::__construct() without the $account_switcher argument is deprecated in drupal:9.3.0 and will be required in drupal:10.0.0. See https://www.drupal.org/node/3142975');
-    $destination = new EntityContentBase(
-      [],
-      'fake_plugin_id',
-      [],
-      $this->createMock(MigrationInterface::class),
-      $this->storage,
-      [],
-      $this->container->get('entity_field.manager'),
-      $this->container->get('plugin.manager.field.field_type')
-    );
-    $this->assertInstanceOf(EntityContentBase::class, $destination);
-  }
-
 }
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php b/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php
deleted file mode 100644
index 81f1c50207..0000000000
--- a/core/modules/migrate_drupal/src/Plugin/migrate/field/NodeReference.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-namespace Drupal\migrate_drupal\Plugin\migrate\field;
-
-use Drupal\migrate_drupal\Plugin\migrate\field\d6\NodeReference as NonLegacyNodeReference;
-
-/**
- * @deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use
- * \Drupal\migrate_drupal\Plugin\migrate\field\d6\NodeReference instead.
- *
- * @see https://www.drupal.org/node/3159537
- */
-class NodeReference extends NonLegacyNodeReference {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
-    @trigger_error('The ' . __NAMESPACE__ . '\NodeReference is deprecated in drupal:9.1.0 and will be removed from drupal:10.0.0. Instead use \Drupal\migrate_drupal\Plugin\migrate\field\d6\NodeReference. See https://www.drupal.org/node/3159537.', E_USER_DEPRECATED);
-
-    parent::__construct($configuration, $plugin_id, $plugin_definition);
-  }
-
-}
diff --git a/core/modules/migrate_drupal/tests/src/Unit/Plugin/migrate/field/d6/NodeReferenceFieldTest.php b/core/modules/migrate_drupal/tests/src/Unit/Plugin/migrate/field/d6/NodeReferenceFieldTest.php
deleted file mode 100644
index 53dd0c33af..0000000000
--- a/core/modules/migrate_drupal/tests/src/Unit/Plugin/migrate/field/d6/NodeReferenceFieldTest.php
+++ /dev/null
@@ -1,64 +0,0 @@
-<?php
-
-namespace Drupal\Tests\migrate_drupal\Unit\Plugin\migrate\field\d6;
-
-use Drupal\migrate\Plugin\MigrationInterface;
-use Drupal\Tests\UnitTestCase;
-use Drupal\migrate_drupal\Plugin\migrate\field\NodeReference;
-use Prophecy\Argument;
-
-/**
- * Tests legacy NodeReference migrate field plugin.
- *
- * @coversDefaultClass \Drupal\migrate_drupal\Plugin\migrate\field\NodeReference
- * @group migrate_drupal
- * @group legacy
- */
-class NodeReferenceFieldTest extends UnitTestCase {
-
-  /**
-   * The plugin being tested.
-   *
-   * @var \Drupal\migrate_drupal\Plugin\MigrateFieldInterface
-   */
-  protected $plugin;
-
-  /**
-   * The prophesize migration.
-   *
-   * @var \Drupal\migrate\Plugin\MigrationInterface|\Prophecy\Prophecy\ProphecyInterface
-   */
-  protected $migration;
-
-  /**
-   * {@inheritdoc}
-   */
-  protected function setUp(): void {
-    $this->plugin = new NodeReference([], 'nodereference', []);
-
-    $migration = $this->prophesize(MigrationInterface::class);
-
-    $migration->setProcessOfProperty(Argument::type('string'), Argument::type('array'))
-      ->will(function ($arguments) use ($migration) {
-        $migration->getProcess()->willReturn($arguments[1]);
-      });
-    $this->migration = $migration->reveal();
-  }
-
-  /**
-   * @covers ::defineValueProcessPipeline
-   * @runInSeparateProcess
-   */
-  public function testDefineValueProcessPipeline() {
-    $this->expectDeprecation('The Drupal\migrate_drupal\Plugin\migrate\field\NodeReference is deprecated in drupal:9.1.0 and will be removed from drupal:10.0.0. Instead use \Drupal\migrate_drupal\Plugin\migrate\field\d6\NodeReference. See https://www.drupal.org/node/3159537.');
-    $this->plugin->defineValueProcessPipeline($this->migration, 'field_name', []);
-
-    $expected = [
-      'plugin' => 'sub_process',
-      'source' => 'field_name',
-      'process' => ['target_id' => 'nid'],
-    ];
-    $this->assertSame($expected, $this->migration->getProcess());
-  }
-
-}
diff --git a/core/modules/migrate_drupal_ui/src/Form/ReviewForm.php b/core/modules/migrate_drupal_ui/src/Form/ReviewForm.php
index 6bad803e3c..89a89963d1 100644
--- a/core/modules/migrate_drupal_ui/src/Form/ReviewForm.php
+++ b/core/modules/migrate_drupal_ui/src/Form/ReviewForm.php
@@ -80,10 +80,6 @@ class ReviewForm extends MigrateUpgradeFormBase {
   public function __construct(StateInterface $state, MigrationPluginManagerInterface $migration_plugin_manager, PrivateTempStoreFactory $tempstore_private, MigrationState $migrationState, ConfigFactoryInterface $config_factory, ModuleHandlerInterface $module_handler = NULL) {
     parent::__construct($config_factory, $migration_plugin_manager, $state, $tempstore_private);
     $this->migrationState = $migrationState;
-    if (!$module_handler) {
-      @trigger_error('Calling ' . __METHOD__ . ' without the $module_handler argument is deprecated in drupal:9.1.0 and will be required in drupal:10.0.0. See https://www.drupal.org/node/3136769', E_USER_DEPRECATED);
-      $module_handler = \Drupal::service('module_handler');
-    }
     $this->moduleHandler = $module_handler;
   }