Nevermind, I finally found it under batch Actions...

I didn't look there to begin with because I didn't think of deleting just one page as a batch action....

Deleting the pages only removes them from the draft site. To remove it from the whole site and make them dissappear you have to select them one by one and click "Delete from the published site" (it's where the publish button normally is located). I have not found a batchaction for this, and I think that deleting pages are a little counter-intuitive.