Delete object to cleanup leftover of paths when removing directories

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/files_external/lib/Lib/Storage/AmazonS3.php

@@ -314,6 +314,7 @@ private function batchDelete($path = null) {
 				}
 				// we reached the end when the list is no longer truncated
 			} while ($objects['IsTruncated']);
+			$this->deleteObject($path);
 		} catch (S3Exception $e) {
 			\OC::$server->getLogger()->logException($e, ['app' => 'files_external']);
 			return false;