Remove dead link - Ref #671

languages/erlang/README.md

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 * [Making reliable distributed systems in the presence of software errors](http://erlang.org/download/armstrong_thesis_2003.pdf)
 PhD thesis of Joe Armstrong, Erlang’s co-inventor, describing the origins of Erlang.
 
-* [A History of Erlang](http://webcem01.cem.itesm.mx:8005/erlang/cd/downloads/hopl_erlang.pdf) by Joe Armstrong
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 * [Characterizing the Scalability of Erlang VM on Many-core Processors](http://www.diva-portal.org/smash/get/diva2:392243/FULLTEXT01.pdfOn) by Jianrong Zhang
 
 * [On the Scalability of the Erlang Term Storage](http://winsh.me/papers/erlang_workshop_2013.pdf) by David Klaftenegger, Konstantinos Sagonas, Kjell Winblad