Deleting a workbook
[NOTE]
Ensure that the workbook is not delete-protected before deleting it. If it is, you must first remove the delete protection status. Refer to Disable delete protection for workbooks for instructions.
On the Home page, from the left navigation panel, click Workspace. From the list of workspaces, open the workspace containing the workbook you want to delete. Click the Workbook tab and select the desired workbook. Click the Settings button on the top and select Delete Workbook.