WordPress has a builtin comments system that works pretty well. However in some cases, especially if you use WordPress as a CMS, not a blogging platform, you may find it dispensable. For some of us turning off comments in Discussion settings is enough, but what if you want to disable access to the comments menu in admin, remove comments from admin bar and post types columns or hide existing comments at the front-end of your site? It’s not that easy, but this piece of code might help.

Quelle: How to Completely Disable Comments – Digital Factory (dFactory)