Clean up tox.ini
Clean up tox.ini

We don't have to change the working directory here.

rfleschenberg/django-shop,jrief/django-shop,awesto/django-shop,khchine5/django-shop,nimbis/django-shop,nimbis/django-shop,nimbis/django-shop,divio/django-shop,jrief/django-shop,nimbis/django-shop,awesto/django-shop,rfleschenberg/django-shop,jrief/django-shop,khchine5/django-shop,divio/django-shop,khchine5/django-shop,jrief/django-shop,khchine5/django-shop,divio/django-shop,rfleschenberg/django-shop,awesto/django-shop,rfleschenberg/django-shop