It's old and is not getting updated, other projects such as meta-guacamayo are better supported and maintained. If there are recipes or code that should be saved, move to appropriate layers.
There's nothing of value left in this layer that isn't anywhere else. It should just be removed.
The meta-demo repository has been removed.
Michael has now removed the repository from git.yoctoproject.org at my request. For reference, the NAS pieces formerly in meta-demo can be found in meta-baryon and the UPNP/Multimedia pieces can be found in meta-guacamayo.
meta-demo was removed from git.yoctoproject.org. The refered layers can be found in: meta-baryon at http://git.yoctoproject.org/cgit/cgit.cgi/meta-baryon/ meta-guacamayo inside http://git.yoctoproject.org/cgit/cgit.cgi/meta-dlna/