Fixed cs styling and first stan issue

Author: mateuszbieniek

phpstan-baseline.neon

@@ -49320,11 +49320,6 @@ parameters:
 			count: 1
 			path: tests/lib/Persistence/Cache/ContentHandlerTest.php
 
-		-
-			message: "#^Method Ibexa\\\\Tests\\\\Core\\\\Persistence\\\\Cache\\\\ContentHandlerTest\\:\\:testDeleteContent\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: tests/lib/Persistence/Cache/ContentHandlerTest.php
-
 		-
 			message: "#^Method Ibexa\\\\Tests\\\\Core\\\\Persistence\\\\Cache\\\\ContentLanguageHandlerTest\\:\\:providerForCachedLoadMethodsHit\\(\\) return type has no value type specified in iterable type array\\.$#"
 			count: 1

src/lib/Persistence/Cache/ContentHandler.php

@@ -4,7 +4,6 @@
  * @copyright Copyright (C) Ibexa AS. All rights reserved.
  * @license For full copyright and license information view LICENSE file distributed with this source code.
  */
-
 namespace Ibexa\Core\Persistence\Cache;
 
 use Ibexa\Contracts\Core\Persistence\Content;