From what I can tell so far, there are quite a few Web parts that come as a default from Microsoft with SharePoint installation. When I look at the list of Web Parts available for a Web gallery, most of these appear as Microsoft.SharePoint.Portal.WebControls.webpartname (i.e. Microsoft.SharePoint.Portal.WebControls.AdvancedSearchControl or Microsoft.SharePoint.Portal.WebControls.Audience_List). A lot of them a user would never need, but I assume they are there because they already serve a function within the application.
Has anyone been able to make some of these Web parts not show up on this list? (I understand that the end user would only see the Web parts available through the Web gallery, but it makes the job of every Top-Level site administrator more difficult to sort through this list and identify only the Web parts that might be useful on their site (when they are picking the Web parts for their specific Web gallery)).
I would very much appreciate any help on this.