[Xymon] old unwanted rrd files

[cleaver at terabithia.org]

> I have a bunch of old rrd files taking up space that are no longer needed
> Will I get myself in trouble if I delete them?
> Is there a better way to clean them up?
>
> The specific files in question are ifstat files with bogus data that were
> created due to a bbwin client bug on windows 2008 servers

Nope, there's no active state that uses them; they're inaccessible unless
you plug the host data in manually to a URL. And even if they were being
used, they'd be re-created the next time data comes in and you'd simply
lose your graphed history (not status-change history).

-jc