All of the information needed to modify the dashboard landing page is included in the above posts. Any changes to a stock system are not supported by any way by UBB systems.
Again there's no stock behavior to remove all of the data from the landing page and all of the data can be extrapolated from the main system just by looking at the total members and accounting of how many posts and topics are displayed on the category or form index pages.
Removing that block of links and data you may find your moderators unable to access the approved posts links as well as manage users that have the appropriate permission, this is especially true if one were to remove the links from the sidebar.