Disable new user registration via JFBConnect 4.2 (in Joomla 2.5)

if ($configModel->getSetting('create_new_users') && $jUserId == null)
            { # User not in system, create new users setting enabled. Redirect to the login/register form

                SCSocialUtilities::setJFBCNewMappingEnabled();
                $redirect=''; $menuItemId=0;
                SCSocialUtilities::getCurrentReturnParameter($redirect, $menuItemId, LOGIN_TASK_JFBCONNECT);
                $app->redirect(JRoute::_('index.php?option=com_jfbconnect&view=loginregister&return='.base64_encode($redirect), false));
            }

if ($configModel->getSetting('create_new_users') && $jUserId == null)
            { # User not in system, create new users setting enabled. Redirect to the login/register form
                $app->enqueueMessage('New User Registration not allowed');
                $app->redirect(JRoute::_('index.php'));
            }

else //Logged in successfully
        {

            $jUser = JFactory::getUser();
            $jfbcLibrary = JFBConnectFacebookLibrary::getInstance();
            $fbUserId = $jfbcLibrary->getMappedFbUserId();
            $args = array($jUser->get('id'), $fbUserId);

            JPluginHelper::importPlugin('jfbcprofiles');
            $app->triggerEvent('scProfilesImportProfile', $args);
            $app->enqueueMessage('Profile Imported!');

function updateProfile()
    {
        $jUser = JFactory::getUser();
        $jfbcLibrary = JFBConnectFacebookLibrary::getInstance();
        $fbUserId = $jfbcLibrary->getMappedFbUserId();
        $args = array($jUser->get('id'), $fbUserId);

        $app = JFactory::getApplication();
        JPluginHelper::importPlugin('jfbcprofiles');
        $app->triggerEvent('scProfilesImportProfile', $args);
        $app->enqueueMessage('Profile Imported!');
        $app->redirect('index.php');
    }

<a href="index.php?option=com_jfbconnect&task=updateProfile">Pull from Facebook</a>

<?php
$jfbcLibrary = JFBConnectFacebookLibrary::getInstance();
if ($jfbcLibrary->getMappedFbUserId())
   echo '<a href="index.php?option=com_jfbconnect&task=updateProfile">Pull from Facebook</a>';
?>