Make test run on non debug builds

Author: carusogabriel

Zend/tests/67468.phpt

@@ -1,7 +1,5 @@
 --TEST--
 Bug #67468 (Segfault in highlight_file()/highlight_string())
---SKIPIF--
-<?php if(!function_exists("leak")) print "skip only for debug builds"; ?>
 --FILE--
 <?php
 highlight_string("<?php __CLASS__;", true);