To remove the chapter starter templates from the Site Template Gallery, perform the following steps.
BE SURE TO verify that you have sufficient rights to delete a site template from the top-level Site Template Gallery.
OPEN the top-level SharePoint site where you previously uploaded the site template STP files. If prompted, type your user name and password, and then click OK.
Click Site Action, and then click Site Settings to display the Site Settings page.
Under Galleries, click Site templates to display the Site Template Gallery page.
If you see a Go To Top-level Site Settings link under Site Collection Administration, you are not on the top-level site administration page. A site template can only be uploaded ...