in Epic, click on Unreal Engine on left panel, then go to Library up top, NOT the Library on the left panel, then, click on the drop down where the Unreal Engine logo is, NOT the one at top left, and choose Remove to Uninstall
in Epic, click on Unreal Engine on left panel, then go to Library up top, NOT the Library on the left panel, then, click on the drop down where the Unreal Engine logo is, NOT the one at top left, and choose Remove to Uninstall