Hello srikanth,
You can try this code.
function load_gd_font_awesome()
{
wp_register_style('geodirectory-font-awesome', '//netdna.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css', array(), GEODIRECTORY_VERSION);
wp_enqueue_style('geodirectory-font-awesome');
wp_register_script('geodirectory-admin', geodir_plugin_url() . '/geodirectory-assets/js/admin-req.min.js', array('jquery'), GEODIRECTORY_VERSION);
wp_enqueue_script('geodirectory-admin');
}
remove_action('admin_enqueue_scripts', 'geodir_admin_styles_req');
add_action('admin_enqueue_scripts', 'load_gd_font_awesome');
If that code doesn’t work for, then you should know usernoise plugin uses very outdated version of font awesome, and we cannot give support to third party outdated plugins.
If that usernoise plugin is mandatory for your site, then you should either contact usernoise developer to make the plugin upto date or hire someone to improve that plugin.