Removed empty man pages for old standalone devices

doc/asciidoc.conf

@@ -36,7 +36,7 @@ template::[header-declarations]
 [footer]
 <refsect1 id="_authors">
 <title>AUTHORS</title>
-<simpara>Man pages by Martin Lucina &lt;<ulink url="mailto:mato@kotelna.sk">mato@kotelna.sk</ulink>&gt;, Martin Sustrik &lt;<ulink url="mailto:sustrik@250bpm.com">sustrik@250bpm.com</ulink>&gt;, and Pieter Hintjens &lt;<ulink url="mailto:ph@imatix.com">ph@imatix.com</ulink>&gt;.</simpara>
+<simpara>The 0MQ reference manual was written by Martin Lucina &lt;<ulink url="mailto:mato@kotelna.sk">mato@kotelna.sk</ulink>&gt;, Martin Sustrik &lt;<ulink url="mailto:sustrik@250bpm.com">sustrik@250bpm.com</ulink>&gt;, and Pieter Hintjens &lt;<ulink url="mailto:ph@imatix.com">ph@imatix.com</ulink>&gt;.</simpara>
 </refsect1>
 <refsect1 id="_resources">
 <title>RESOURCES</title>

doc/zmq_forwarder.txt

-zmq_forwarder(1)
-================
-
-
-NAME
-----
-zmq_forwarder - forwarding device for publish-subscribe messaging
-
-
-SYNOPSIS
---------
-To be written.
-
-
-DESCRIPTION
------------
-To be written.
-
-
-OPTIONS
--------
-To be written.
-
-
-SEE ALSO
---------
-linkzmq:zmq[7]
-
-

doc/zmq_queue.txt

-zmq_queue(1)
-============
-
-
-NAME
-----
-zmq_queue - forwarding device for request-reply messaging
-
-
-SYNOPSIS
---------
-To be written.
-
-
-DESCRIPTION
------------
-To be written.
-
-
-OPTIONS
--------
-To be written.
-
-
-SEE ALSO
---------
-linkzmq:zmq[7]
-
-

doc/zmq_streamer.txt

-zmq_streamer(1)
-===============
-
-
-NAME
-----
-zmq_streamer - streamer device for parallelized pipeline messaging
-
-
-SYNOPSIS
---------
-To be written.
-
-
-DESCRIPTION
------------
-To be written.
-
-
-OPTIONS
--------
-To be written.
-
-
-SEE ALSO
---------
-linkzmq:zmq[7]
-
-