weed out broken links

applications/examples/private/content/en/default/documentation/community.markmin

@@ -1,8 +1,6 @@
 ### Community Documentation
 
 - [[Roadmap https://trello.com/b/d3aqBbBl/web2py-roadmap]]
-- [[web2pybrasil http://www.web2pybrasil.com.br popup]]
-- Apostila em português [[Download http://dl.dropbox.com/u/830444/apostila_web2py_basico.pdf popup]] e [[Online http://web2pybrasil.appspot.com/init/plugin_wiki/page/curso-web2py-000 popup]]
 - [[Sitio en español http://www.web2py.com.ar popup]]
 - [[Documentación en español http://www.web2py.com.ar/examples/default/docs popup]]
-- [[Chrome extension to display tickets https://github.com/agarden/web2py-devmode-chrome]]
+- [[Chrome extension to display tickets https://github.com/agarden/web2py-devmode-chrome]]