Board Thread:Wiki Discussions and Support/@comment-1251315-20141119134941/@comment-34115-20141119164949

TagSync(Page) can be removed from templates/pages and deleted.

Though deletion of the templates themselves should probably wait till their inclusion is cleaned up. Since the presence off the templates gives you the helpful Category:TagSynced list of pages with it you can use to find inclusions.

ACGNetwork can't simply be deleted, it outputs the wiki's name in some templates like Template:Delete. Those will have to be handled first (which is probably easiest to do after droping TagSync(Page) inclusions.

Other "unused" templates should be discussed, it depends, some of them may be useful.