[BUGFIX] Fix single news appearing in related news

Classes/Domain/Repository/NewsRepository.php

@@ -596,6 +596,9 @@ class NewsRepository extends AbstractRepository {
 		$constraints = [
 			$query->logicalNot(
 				$query->equals('uid', $news->getUid())
+			),
+			$query->logicalNot(
+				$query->equals('l10n_source', $news->getUid())
 			)
 		];
 		if ($newest) {