Nope!  The SE robot does a few things with these.

Questions with no upvoted answers are bumped to the front page in pairs at random.  I believe two questions are picked every four hours.  This is intended, in case anyone happens to have an answer.

I believe there is a cleanup process that deletes these after a time if the question also has a non-positive score...

The rules for deletion of these questions are here:

http://meta.stackexchange.com/questions/5221/how-does-deleting-work-what-can-cause-a-post-to-be-deleted-and-what-does-that

Of course, you can certainly vote to delete based on a custom close reason, but I personally won't second it.