Reinstalling Calais creates vocabularies, even if they already exist

Calais doesn't remove the vocabularies it creates when you uninstall it.

After uninstalling (fully, so not just deactivating) the module and reinstalling it, it creates its vocabularies again.

Right now, cause I'm playing around with both this module and some others to see which one does what I need to, I've had to uninstall and reinstall Calais a couple of times. The result is one hell of a long list of vocabularies, of which most are the same.

Eg:

Calais Document Category
edit vocabulary list terms add terms

Calais Document Category Community, Wiki, News
edit vocabulary list terms add terms

Calais Document Category
edit vocabulary list terms add terms

Calais Document Category
edit vocabulary list terms add terms

Calais Document Category
edit vocabulary list terms add terms

Calais Document Category

I'm sure this'll give errors sooner or later in the functionality of the module as well.