code: public void remove() throws ProponoException {
          if (getEditURI() == null) {
              throw new ProponoException("ERROR: cannot delete unsaved entry");
          }
          final DeleteMethod method = new DeleteMethod(getEditURI());
          addAuthentication(method);
          try {
              getHttpClient().executeMethod(method);
          } catch (final IOException ex) {
              throw new ProponoException("ERROR: removing entry, HTTP code", ex);
          } finally {
              method.releaseConnection();
          }
      }
docs: Remove entry from server.