我认为这样的事情应该很好：

function my_views_users($args) {
    $hidden_role = \'administrator\';  // it will hide filter with role \'administrator\' - you can change it to some other role

    $users_counts = count_users();
    $total_users = $users_counts[\'total_users\'] - $users_counts[\'avail_roles\'][$hidden_role];

    $args[\'all\'] = "<a href=\'$url\'$class>" . sprintf( _nx( \'All <span class="count">(%s)</span>\', \'All <span class="count">(%s)</span>\', $total_users, \'users\' ), number_format_i18n( $total_users ) ) . \'</a>\';
    unset($args[$hidden_role]);
    return $args;
}
add_filter(\'views_users\', \'my_views_users\');