remove existing calendars from proxy remote

src/Bundle/ChillCalendarBundle/Repository/CalendarRepository.php

@@ -25,11 +25,14 @@ use function count;
 
 class CalendarRepository implements ObjectRepository
 {
+    private EntityManagerInterface $em;
+
     private EntityRepository $repository;
 
     public function __construct(EntityManagerInterface $entityManager)
     {
         $this->repository = $entityManager->getRepository(Calendar::class);
+        $this->em = $entityManager;
     }
 
     public function countByAccompanyingPeriod(AccompanyingPeriod $period): int