There is no such functionality in shortcode, but in the widget:
To resolve your task you are need modify code of the plugin:
index.php -> function draw_term_childs_select ->
before
1 2 3 4 5 | <?php if ($show_option): ?> <option <?php if ($tax_count == 0 AND ( $widget_options['taxonomies_options_show_count'] == 'true' OR $widget_options['taxonomies_options_show_count'] == 1)): ?>disabled<?php endif; ?> value="<?php echo $term_id ?>" <?php if ($selected_id == $term_id): ?>selected<?php endif; ?>> <?php _e($term['name']) ?><?php echo $tax_count_strting; ?> </option> <?php endif; ?> |
add next code
1 2 3 4 5 6 | <?php if (in_array($term_id, array(57, 63, 89, 99))) { $show_option = false; } ?> |
Where array(57,63,89,99) is term_ids which you want to exclude