The TWiki web is required only for the TWikiCompatibilityPlugin, and any installed legacy TWiki plugins to work. Please do not add any content to this web,
Former TWiki web content is now located in the System web
If you do not need TWiki compatibility you can disable TWikiCompatibilityPlugin in the configurePlugins section. This will also hide the TWiki web so it does not appear in any user interfaces. Not even administrators will see it.