Issue #3261253 by andypost, longwave: Remove deprecated path.module functions

core/modules/path/src/Plugin/migrate/process/d6/UrlAliasLanguage.php

-<?php
-
-namespace Drupal\path\Plugin\migrate\process\d6;
-
-use Drupal\migrate\MigrateExecutableInterface;
-use Drupal\migrate\ProcessPluginBase;
-use Drupal\migrate\Row;
-use Drupal\Core\Language\LanguageInterface;
-
-/**
- * Url alias language code process.
- *
- * @MigrateProcessPlugin(
- *   id = "d6_url_alias_language",
- *   no_ui = TRUE
- * )
- *
- * @deprecated in drupal:9.3.0 and is removed from drupal:10.0.0. No direct
- *   replacement is provided.
- *
- * @see https://www.drupal.org/node/3219051
- */
-class UrlAliasLanguage extends ProcessPluginBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
-    @trigger_error(__CLASS__ . ' is deprecated in drupal:9.3.0 and is removed from drupal:10.0.0. No direct replacement is provided. See https://www.drupal.org/node/3219051', E_USER_DEPRECATED);
-    parent::__construct($configuration, $plugin_id, $plugin_definition);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
-    $langcode = ($value === '') ? LanguageInterface::LANGCODE_NOT_SPECIFIED : $value;
-    return $langcode;
-  }
-
-}

core/modules/path/tests/src/Unit/migrate/process/d6/UrlAliasLanguageDeprecatedTest.php

-<?php
-
-namespace Drupal\Tests\path\Unit\migrate\process\d6;
-
-use Drupal\path\Plugin\migrate\process\d6\UrlAliasLanguage;
-use Drupal\Tests\migrate\Unit\process\MigrateProcessTestCase;
-
-/**
- * Tests error message from deprecated UrlAliasLanguage process plugin.
- *
- * @group path
- * @group legacy
- * @coversDefaultClass \Drupal\path\Plugin\migrate\process\d6\UrlAliasLanguage
- */
-class UrlAliasLanguageDeprecatedTest extends MigrateProcessTestCase {
-
-  /**
-   * Tests legacy UrlAliasLanguage process plugin.
-   */
-  public function testUrlAliasLanguageDeprecation() {
-    $this->expectDeprecation("Drupal\path\Plugin\migrate\process\d6\UrlAliasLanguage is deprecated in drupal:9.3.0 and is removed from drupal:10.0.0. No direct replacement is provided. See https://www.drupal.org/node/3219051");
-    new UrlAliasLanguage([], 'test', []);
-  }
-
-}