add xti.php

ads_and_trackers1.txt

@@ -3577,6 +3577,8 @@ www.facebook.com/tr/
 www.facebook.com/ajax/bz
 www.facebook.com/adnw_sync
 m.facebook.com/a/bz
+m.facebook.com/xti.php
+www.facebook.com/xti.php
 @@~www.facebook.com/api/graphql/~["referer_host eq www.facebook.com"]
 @@~www.facebook.com/api/graphql/~["referer_host eq m.facebook.com"]
 www.google-analytics.com