GRK-2380 #comment numenta/Sphinx-HTTP-domain to allow body-less responses.

GRK-2380 #comment numenta/Sphinx-HTTP-domain to allow body-less responses.

Some of our DELETE endpoints now reply with a 204 No Content header, and no body.
Our fork of Sphinx-HTTP-domain wanted a full JSON Body for every single response.
Now, our fork on Sphinx-HTTP-domain can handle body-less responses.