In my vocabulary page I now have a list of “tags” but no longer need all of them. How do I delete the ones I no longer need?
All tags that appear under Filters on the Vocabulary page are added to some terms on your list and their function is to make it easier for you to search for or filter out specific terms from your list. If you want to make certain tag disappear from Filters, click on it and list of all terms to which you added that tag will appear below. Then simple remove it from terms and once when all tags are removed it will also disappear from tags list.
Hope this helps!