If for some reason you do not need or want to use Views in generating custom output of a taxonomy term pages or listings, use template overwriting or overrides. Copy page.tpl.php into your theme folder and rename it page–taxonomy.tpl.php. Proceed customizing template page as needed, ensuring you clear browser and flushing registry cache.
Example below is how to disable node title of taxonomy term which is a duplicate of a preferred custom title, image and text entered in the term description field.