Deletes a report from the given Web Intelligence document.
DELETE <webiURL>/documents/{documentId}/reports/{reportId}
Response type: application/xml or application/json
The response is a message stating the success or failure of the request.
DELETE <webiURL>/documents/7858/reports/9372
<success> <message>The resource of type 'report' with identifier '9372' has been successfully removed.</message> <id>9372</id> </success>