Remove references to mailing list.

Fixes Python-Markdown#793.

Author: waylan

README.md

@@ -43,10 +43,8 @@ See the change log at <https://Python-Markdown.github.io/change_log>.
 Support
 -------
 
-You may ask for help and discuss various other issues on the [mailing list][]
-and report bugs on the [bug tracker][].
+You may report bugs, ask for help, and discuss various other issues on the [bug tracker][].
 
-[mailing list]: http://lists.sourceforge.net/lists/listinfo/python-markdown-discuss
 [bug tracker]: http://github.com/Python-Markdown/markdown/issues
 
 Code of Conduct

docs/index.md

@@ -106,9 +106,7 @@ are summarized below:
 Support
 -------
 
-You may ask for help and discuss various other issues on the [mailing list][]
-and report bugs on the [bug tracker][].
+You may report bugs, ask for help, and discuss various other issues on the [bug tracker][].
 
 [third party extension]: https://github.com/Python-Markdown/markdown/wiki/Third-Party-Extensions
-[mailing list]: http://lists.sourceforge.net/lists/listinfo/python-markdown-discuss
 [bug tracker]: http://github.com/Python-Markdown/markdown/issues

setup.py

@@ -55,10 +55,9 @@
 Support
 =======
 
-You may ask for help and discuss various other issues on the
-`mailing list`_ and report bugs on the `bug tracker`_.
+You may report bugs, ask for help, and discuss various other issues on
+the `bug tracker`_.
 
-.. _`mailing list`: http://lists.sourceforge.net/lists/listinfo/python-markdown-discuss
 .. _`bug tracker`: http://github.com/Python-Markdown/markdown/issues
 '''