There are two ways to disable legacy Help Center. The legacy Help Center can be disabled together with Page Help or without affecting Page Help/Inline Manual which will be covered below.
To hide only legacy Help Center from the Home page without affecting the other help resources, navigate to the Menu Item Override screen. Click on the pencil icon for the Help Center Menu Item from the Menu Item Override grid. Tick the Inactive box and press [Save] followed by [Clear Cache] for the effects to take place.
After clearing the cache, the legacy Help Center is removed but the other help resources remain.

