Remove references to the mailing list (no longer available).

Closes Supervisor#1241
Closes Supervisor#947

README.rst

@@ -23,13 +23,10 @@ You can view the current Supervisor documentation online `in HTML format
 <http://supervisord.org/>`_ .  This is where you should go for detailed
 installation and configuration documentation.
 
-Mailing list, Reporting Bugs, and Viewing the Source Repository
----------------------------------------------------------------
+Reporting Bugs and Viewing the Source Repository
+------------------------------------------------
 
-You may subscribe to the `Supervisor-users mailing list
-<http://lists.supervisord.org/mailman/listinfo/supervisor-users>`_.
-
-Please report bugs in the `Github issue tracker
+Please report bugs in the `GitHub issue tracker
 <https://github.com/Supervisor/supervisor/issues>`_.
 
 You can view the source repository for supervisor via
@@ -39,7 +36,6 @@ You can view the source repository for supervisor via
 Contributing
 ------------
 
-If you'd like to contribute to supervisor directly, please contact the
-`Supervisor-users mailing list
-<http://lists.supervisord.org/mailman/listinfo/supervisor-users>`_.
-
+We'll review contributions from the community in
+`pull requests <https://help.github.com/articles/using-pull-requests>`_
+on GitHub.

docs/development.rst

@@ -1,17 +1,6 @@
 Resources and Development
 =========================
 
-Mailing Lists
--------------
-
-Supervisor has a mailing list for users.  You may subscribe to the
-`Supervisor-users mailing list
-<http://lists.supervisord.org/mailman/listinfo/supervisor-users>`_.
-
-Supervisor has a mailing list for checkins too.  You may subscribe to the
-`Supervisor-checkins mailing list
-<http://lists.supervisord.org/mailman/listinfo/supervisor-checkins>`_.
-
 Bug Tracker
 -----------
 
@@ -28,10 +17,9 @@ You can also view the `Supervisor version control repository
 Contributing
 ------------
 
-Supervisor development is discussed on the mailing list.  We'll review
-contributions from the community in both
+We'll review contributions from the community in
 `pull requests <https://help.github.com/articles/using-pull-requests>`_
-on GitHub (preferred) and patches sent to the list.
+on GitHub.
 
 Author Information
 ------------------

docs/plugins.rst

@@ -6,8 +6,6 @@ with Supervisor. This list aims to summarize them and make them easier
 to find.
 
 See README.rst for information on how to contribute to this list.
-Obviously, you can always also send an e-mail to the Supervisor mailing
-list to inform about missing plugins or libraries for/using Supervisor.
 
 Dashboards and Tools for Multiple Supervisor Instances
 ------------------------------------------------------