I will add this to our feature requests For the time being, you can archive pages in bulk. We generally recommend archiving instead of deleting so you can always have access to old content.
In our particular case, we do miss delete capabilities as we have lots of test pages created under specific test models. House cleaning will be far more easier if we can just wipe them out with 2 clicks instead of having to load each page and clicking the delete button.
We will keep an eye on the cloning/deleting feature!