PHPC-980: Use correct topology constant in CLEANUP()

Author: jmikola

tests/session/session-003.phpt

@@ -2,7 +2,7 @@
 MongoDB\Driver\Session spec test: session cannot be used for different clients
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
-<?php NEEDS('STANDALONE'); CLEANUP(REPLICASET); ?>
+<?php NEEDS('STANDALONE'); CLEANUP(STANDALONE); ?>
 --FILE--
 <?php
 require_once __DIR__ . "/../utils/basic.inc";