Deletes a data filter from a specific report, referenced by its ID.
DELETE /documents/<documentID>/reports/<reportID>/datafilter
Response type: application/xml or application/json
The response is a message stating the success or failure of the request.
DELETE /documents/9512/reports/67/datafilter
Response:
<success> <message>The resource of type "Report" with identifier "67" has been successfully updated.</message> <id>67</id> </success>