code: private void deleteAsset(String id) throws IOException, RequestFailureException {
          HttpURLConnection connection = createHttpURLConnectionToMassive("/assets/"
                                                                          + id);
          connection.setRequestMethod("DELETE");
          testResponseCode(connection, true);
      }
docs: Deletes an asset with the given ID. Note, this will not delete any
  attachments associated with the asset.
  
  @see #deleteAssetAndAttachments(String)
  @param id
  The ID to delete
  @return <code>true</code> if the delete is successful
  @throws IOException
  @throws RequestFailureException