Removed `import` `django` and `safedelete` form `setup.py`
Removed `import` `django` and `safedelete` form `setup.py`

It breaks install when Django is not installed

Gagaro/django-safedelete,rfleschenberg/django-safedelete,rfleschenberg/django-safedelete,makinacorpus/django-safedelete,Gagaro/django-safedelete,makinacorpus/django-safedelete