Deletes a custom palette attached to a Web Intelligence document.
DELETE /documents/<documentID>/palettes/<paletteID>
Response type: application/xml or application/json
The response is a message stating the success or failure of the request.
DELETE /documents/1234/palettes/ac468f5c-2035-42ca-8e6f-76700657fa91
<success> <message>The resource of type "Palette" with identifier "ac468f5c-2035-42ca-8e6f-76700657fa91" has been successfully removed.</message> <id>ac468f5c-2035-42ca-8e6f-76700657fa91</id> </success>