How do I remove a top link in SharePoint?
Select the navigation node or link in either global navigation (Top navigation) or from current navigation (Quick Launch) Click on the “Delete” icon to delete the link from the navigation. Click on the “OK” button at the bottom of the page to save your changes.
How do I remove a link from the left in SharePoint?
Click the ellipses (...) next to the link that you want to remove. Click Remove.