Custom template file for taxonomy term in drupal 7
taxonomy-term.tpl.php is used in Drupal 7. You can find it in ROOT_DIRECTORY\modules\taxonomy\taxonomy-term.tpl.php.
To override this template, copy it, place it in your theme template directory, and modify it. Don't forget to clear the cache to see the output from the modified template.

Do not modify any core files (including template files), in any case.

If you want to show only the details of taxonomy term then you can create a view of type 'Term referance' with suitable filter.