Remove Oxygen post from Insert/edit link

gistfile1.txt

function removeCustomPostTypesFromTinyMCELinkBuilder($query){
    $key = false;

    $cpt_to_remove = array(
        'oxy_user_library',
        'ct_template'
    );

    foreach ($cpt_to_remove as $custom_post_type) {
        $key = array_search($custom_post_type, $query['post_type']);
        if($key){
            unset($query['post_type'][$key]);
        } 
    }
    return $query; 
}
add_filter( 'wp_link_query_args', 'removeCustomPostTypesFromTinyMCELinkBuilder' );