Delete a Custom Dashboard
The custom dashboards can be deleted when they are no longer needed. Deleting a custom dashboard permanently removes its layout and widgets.
To delete a custom dashboard:
Go to the Organization Dashboard screen. Click on the Custom Dashboard. In the following screen Default Dashboard (archived default) is the custom dashboard.

Click on delete icon in the right top corner of the screen. The Warning window is displayed.

Click on Delete to delete the custom dashboard. The custom dashboard is deleted successfully.