destroyedData
Data callback that updates the cache when a data record is deleted.
    connection.destroyedData(responseData, requestData)
  
  Calls destroyData on the cacheConnection to remove a data record stored in the cache.
Calls and returns the response from any underlying behavior's destroyedData callback.
Parameters
- responseData 
{Object}:the data returned by the data destroy request
 - requestData 
{Object}:the data that was passed to the data destroy request
 
Returns
 {Object}: 
the data returned from an underlying behavior's destroyedData callback, if one exists. Otherwise
returns the responseData.