When deleting a term, the term meta isn't deleted from the DB.

I solved this by adding these lines to your file. Maybe you want to add them or solve the problem in another manner:

Code: Select all

add_action('delete_term', 'simple_post_meta_delete_term');
function simple_post_meta_delete_term($term_id) {

   global $wpdb;
   $wpdb->query($wpdb->prepare("DELETE FROM $wpdb->termmeta WHERE term_id = %d", $term_id));

}

http://wordpress.org/extend/plugins/simple-term-meta/