This method deletes a feed from Cranked.
|api_key||null||Yes||API key can be retrieved from
|feed_id||null||Yes||Required for Cranked to know which feed to delete.|
|No data passed||API was called but no data were passed|
|API key not passed||The required API key was not passed into the call|
|Invalid API key||The API key was passed into the call but is invalid|
|feed_id not passed||No feed_id was passed into the call.|