You can only do this if you are an admin on a community. Add '?action=delete' onto the end of the URL of the page you want to delete. Or, click the dropdown below the edit buttom and click 'delete'. :)
FYI, content-moderators can delete pages, too. Discussion moderators can delete article comments.
If you do not agree with a page and you are not a member of staff, you can add {{delete}} to show you do not agree. Please don't use this to vandilise any pages.
You meant {{delete}}.