Issue #3460359 by joegraduate: Remove update workaround added in 8.x-2.0-beta4 from 3.0.x branch

Closes #3460359

src/ConfigSyncServiceProvider.php

-<?php
-
-namespace Drupal\config_sync;
-
-use Drupal\Core\DependencyInjection\ContainerBuilder;
-use Drupal\Core\DependencyInjection\ServiceProviderBase;
-use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
-
-/**
- * ServiceProvider for config_sync services.
- */
-class ConfigSyncServiceProvider extends ServiceProviderBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function alter(ContainerBuilder $container) {
-    // This service was introduced as a new dependency in config_sync
-    // 8.x-2.0-beta2.
-    // @see https://www.drupal.org/project/drupal/issues/2863986
-    try {
-      $container->getDefinition('plugin.manager.config_normalizer');
-    }
-    // If the service is not available, remove its dependent services. A
-    // Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException
-    // would prevent installing the new module dependency.
-    catch (ServiceNotFoundException $exception) {
-      // Requires 'plugin.manager.config_normalizer'.
-      $container->removeDefinition('config_sync.lister');
-      // Both require 'config_sync.lister'.
-      $container->removeDefinition('config_sync.snapshotter');
-      $container->removeDefinition('config_sync.commands');
-      // Requires config_sync.snapshotter.
-      $container->removeDefinition('config_sync_snapshot_subscriber');
-    }
-  }
-
-}