Reports that are unused or not needed anymore can be deleted. To delete reports:
From the menu bar click the Home drop down menu. Now browse down to the Reports option. This takes you to the Reports page.
The left side of the page displays the various categories under which reports are available. Select a category from the left to view available reports. A list of reports available for the selected category is displayed in the right pane.
Click the Delete link to the right of a report to delete that report.
The selected report will be deleted and will no longer be displayed in the list of reports.