I've been asked to disable the slide library and forms library while my
organization is still "getting used to" SharePoint. The forms library
was just bundled in and deployed as part of the TeamCollab feature, so
I was able to just copy that, remove the form library and deploy a new
feature.

However, even when I disable all of the features in the site, I still
see the slide library showing. I've looked through the onet.xml for
the site definition and don't see any reference to the GUID for the
slide library feature.

Where in the world is this thing defined and how do disable it?