remove category from post meta

The [entry-terms] shortcode uses get_the_term_list() which doesn’t seem to have the exclude argument. Even if you filter that function, still it’s a lot to do to accomplish this.

I’d just use CSS attribute selectors to display none categories that I want excluded.
https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors

That’s impossible with CSS.

You can, with Child Theme in use, replace that whole templage tag (in your OP) with wp_list_categories(), then you an include, exclude, and do more with your own $args

http://codex.wordpress.org/Template_Tags/wp_list_categories

That only get rid of the whole thing which is not what we are talking about here. We want to get rid of the , (comma) left after when some category is display none via attribute selectors.

Or maybe I misunderstood the question. But when I hear “exclude” I automatically think that there is some of them not wanted in the list.