fixup! feat(dav): Add and filter locally scoped properties for federa…

…ted address book sync

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

apps/dav/lib/CardDAV/SystemAddressbook.php

@@ -118,12 +118,9 @@ public function getChild($name): Card {
  }
 
  /**
- * @param $syncToken
- * @param $syncLevel
- * @param $limit
  * @throws UnsupportedLimitOnInitialSyncException
  */
- public function getChanges($syncToken, $syncLevel, $limit = null): ?array {
+ public function getChanges($syncToken, $syncLevel, $limit = null) {
  if (!$syncToken && $limit) {
  throw new UnsupportedLimitOnInitialSyncException();
  }