title: PyMongo: What happens to cursor when no_cursor_timeout=True
body: <p>Looking at the <code>cursor</code> docs for MongoDB, I don't see a way to delete a cursor. What happens in PyMongo if I am using a cursor with the <code>no_cursor_timeout</code> property set to True? Is the cursor deleted when my script terminates even if I have not gotten to the end of the cursor's results?</p>