Hide rss link on private and hidden BuddyPress groups

<?php
// add this code in the functions.php file of your theme

//if your theme doesn't use bp_head hook, then choose wp_head hook.
add_action('bp_head', 'egrefin_hide_private_hidden_group_rss_via_custom_css');

function egrefin_hide_private_hidden_group_rss_via_custom_css() {
    if( bp_is_current_component( 'groups' ) ){
        global $bp;

        if ( isset( $bp->groups->current_group->status ) && 'public' != $bp->groups->current_group->status ) {
            ?>
            <style>
            div#subnav li.feed{
                display:none;
            }
            </style>
            <?php
        }

    }
}
?>