[WindowsCentral.com]

You can stop recent documents and frequent locations from showing in Jump Lists, and here's how to do it on Windows 10.
On Windows 10, Jump List is a feature available across the taskbar, Start menu, and Quick Access in File Explorer, which allows you to quickly jump to recent documents, frequent folder locations (including websites in a browser), and some apps even include quick actions to perform specific tasks.

Full story from the WindowsCentral blog...