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.