How do I remove/reset all current widgets from the database?

I recently migrated a site from a dev server to a web server and I appear to be stuck with a menu sidebar I had built in the old site that doesn't appear in the widget area of the new site's dashboard but appears on a page with side navigation regardless of settings applied.

If I add in the correct menu with styling, I end up with both menus one above the other.

I think it's something still stuck/stored in the options database.

Does anyone know how to delete/reset all widgets from phpMyAdmin?

I can see the widgets in sidebars_widgets but have read you shouldn't edit the entry directly from phpMyAdmin.