Update free-programming-books-pt_BR.md (#5881)

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books/free-programming-books-pt_BR.md

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 ### PHP
 
-* [A semana PHP](http://asemanaphp.com.br)
 * [Api REST Com Silex no GAE](http://bit.ly/ebook-silex) - Nanderson Castro (PDF, EPUB, MOBI)
 * [CakePHP](http://book.cakephp.org/2.0/pt/index.html)
 * [Curso Linguagem PHP 2000](http://www.etelg.com.br/paginaete/downloads/informatica/php.pdf) (PDF)