Clean up SharePoint’s Quick Launch tool
In SharePoint 2013, the Quick Launch navigation tool (links to pages and objects on the left), automatically creates a Recent category with links to all of the most recent objects or pages you create. While you build out SharePoint sites and pages, this might be a good thing, but over time, it may make navigation messy and confusing.
Click EDIT LINKS at the bottom of the Quick Launch list, then the X next to Recent. You can click and drag anything you’d like to keep on the Quick Launch into the main list before deleting Recent.