You can delete:
The current dashboard page
One or more dashboard pages from the "Dashboard Properties dialog"
To delete the current dashboard page:
Edit the dashboard. For information, see "Editing Dashboards."
Navigate to the page to delete.
Click the Delete Current Page toolbar button.
Confirm the deletion.
To delete one or more dashboard pages:
Edit the dashboard. For information, see "Editing Dashboards."
Click the Tools toolbar button and select Dashboard Properties.
The "Dashboard Properties dialog" is displayed.
For each page to delete:
In the Dashboard Pages area, select the page.
Click Delete in the Dashboard Pages toolbar.
Confirm the deletion.
Click OK.