protected function removeFieldsValidationConfiguration(array &$formConfiguration)
    {
        foreach ($formConfiguration['fields'] as $fieldName => $fieldConfiguration) {
            if (true === isset($fieldConfiguration['validation'])) {
                unset($fieldConfiguration['validation']);
                unset($fieldConfiguration['activation']);
                $formConfiguration['fields'][$fieldName] = $fieldConfiguration;
            }
        }

        return $this;
    }