Microsoft rolled out a new build to Windows Insiders on Fast Ring and Skip Ahead which introduced a new feature for those who hate cluttered Start Menu. With the new update, users can now right-click on groups and unpin them from the Start Menu. This would be particularly helpful after a clean install.
— Jen Gentleman ? (@JenMsft) October 31, 2018
To use the feature, you will first need to head to Start Menu and right-click on the Group label. Once there, select “Remove group” to unpin all the items inside the group from your Start Menu. The new feature is extremely useful for those who like to customize their Windows 10 experience and don’t want the items pinned by Microsoft. The feature is currently available to the Windows Insiders on Fast Ring and Skip Ahead Ring and will roll out to the public with the 19H1 update.