Clean up server-debug.phpt (#1242)

Author: tanlisu

tests/server/server-debug.phpt

@@ -3,7 +3,6 @@ MongoDB\Driver\Server debug output
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
 <?php skip_if_not_live(); ?>
-<?php skip_if_not_clean(); ?>
 --FILE--
 <?php
 require_once __DIR__ . "/../utils/basic.inc";