You can delete dashboard pages that are no longer used. When you delete a page, all charts on the page are also deleted.
You can hide a dashboard page to remove it from the Dashboards area without deleting it so you can open it again later. See Hiding dashboard pages. To back up a dashboard page before deleting it, save it as a template. See Saving dashboard page templates.
1. Select Dashboards.
The Dashboards area opens.
2. Select 
on the dashboard page tab and select Delete.
3. Select Yes when prompted.
The page is deleted.