You may try to delete the user_friends from the following line in the modules\boonex\facebook_connect\classes\BxFaceBookConnectConfig.php

$this -> aFaceBookReqParams = array(

            'scope' => getParam('bx_facebook_connect_extended_info') 

                ? 'email,public_profile,user_friends,user_birthday,user_about_me,user_hometown,user_location'

                : 'email,public_profile',

            'redirect_uri' => $this -> sPageReciver,

        );