fix build

Author: wouterj

_build/.requirements.txt

@@ -11,5 +11,4 @@ six==1.10.0
 snowballstemmer==1.2.1
 sphinx==1.8.5
 git+https://github.com/fabpot/sphinx-php.git@v2.0.0#egg_name=sphinx-php
-sphinxcontrib-phpdomain==0.6.3
 jsx-lexer===0.0.8

_build/conf.py

@@ -35,8 +35,8 @@
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = [
     'sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.todo',
-    'sphinxcontrib.phpdomain',
-    'sensio.sphinx.configurationblock', 'sensio.sphinx.phpcode', 'sensio.sphinx.bestpractice', 'sensio.sphinx.codeblock',
+    'sensio.sphinx.codeblock',
+    'sensio.sphinx.configurationblock', 'sensio.sphinx.phpcode', 'sensio.sphinx.bestpractice',
     'symfonycom.sphinx'
     #,'sphinxcontrib.spelling'
 ]