How to Delete a Blogroll From WordPress

1. Log into the WordPress dashboard and click 'Links' in the left-hand menu. Click 'Link Categories' under the 'Links' menu option. By default, WordPress installs with a 'Blogroll' link category full of helpful links related to WordPress. You cannot delete the 'Blogroll' category, but you can edit its name and delete all of its links.
2. Click the 'Blogroll' link on the 'Link Categories' page, then replace the name with a name you want to use for any category of links. Create new categories as desired.

3. Click 'Links' again on the left menu. Use the select box next to the 'Filter' button to select links by category. Select the category you renamed from 'Blogroll' and click the 'Filter' button. Check the box next to 'Name' to select all links. Deselect any you want to keep. Select 'Delete' from the 'Bulk Actions' select box, then click 'Apply.' This will delete all links that came with WordPress under 'Blogroll.'
4. Click 'Appearance' then 'Widgets' on the left menu. Check each sidebar for the 'Links' widget. Click the 'Links' widget title if you see it in a sidebar then use the select box to select the name of a links category you want to display. You cannot select a link category that does not yet contain any links, so go back and add some if you do not see a category you want to use.