Adopt @PHPUnit55Migration:risky rule of php-cs-fixer

Author: nicolas-grekas

ContainerBuilder.php

@@ -946,8 +946,8 @@ public function getAlias($id)
      * This methods allows for simple registration of service definition
      * with a fluid interface.
      *
-     * @param string $id         The service identifier
-     * @param string $class|null The service class
+     * @param string      $id    The service identifier
+     * @param string|null $class The service class
      *
      * @return Definition A Definition instance
      */

Tests/ContainerTest.php

@@ -13,7 +13,6 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\ForwardCompatTestTrait;
-use Symfony\Component\DependencyInjection\Alias;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;