calendar range: remove on remote after removal in the database

src/Bundle/ChillCalendarBundle/RemoteCalendar/Connector/MSGraph/MachineHttpClient.php

@@ -45,6 +45,7 @@ class MachineHttpClient implements HttpClientInterface
         switch ($method) {
             case 'GET':
             case 'HEAD':
+            case 'DELETE':
                 $options['headers']['Accept'] = 'application/json';
 
                 break;