[EFL] Unreviewed Intel bots fix after r149231.

* efl/jhbuild.modules: Disable the libxml Python bindings since the
bots don't have Python's development files installed. libxml should
detect this kind of thing better.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149238 268f45cc-cd09-0410-ab3c-d52691b4dbfc