This reverts commit 416e3eb0c5.
This shouldn't be needed, when lorax will be called as a separate
process, not imported into pungi as a module (where python version
matters).
Fedora 23 forces every app that can be run under python 3 to be installed
as a python 3 app. This means lorax is installed as python 3 while pungi
remains 2.7. As soon as pungi is updated to python 3 (or the Fedora team
come to their senses) this package can be deleted.
