Eduardo

Hide one o more categories when you use the_category tag or wp_list_categories tag. No exclude post, but only hide a category name in template view. 
Example? 
You use a category called “featured” in your template but you don’t want it see? Use Hide Categories
Thanks to <a href="http://www.infocube.it" title="sviluppo software" rel="nofollow ugc">infocube</a> for the plugin’s idea

Hide Categories

Hide one o more categories when you use the_category tag or wp_list_categories tag. No exclude post, but only hide a category name in template view.

Huseyin Berberoglu

Hides selected categories from lists. You can manage this from your admin panel, so you don’t need to open template 
codes to add exclude parameter to wp_list_categories function. Essentially it adds exclude parameter to wp_list_categories 
function but it’s so easy now. You can manage via admin panel.
<a href="http://nxsn.com/" rel="nofollow ugc">My other plugins</a>

Hide Categories vs WP Hide Categories