Remove Django from install_requires

See also django-mptt/django-mptt#3

Author: matthiask

setup.py

@@ -35,7 +35,6 @@ def get_source_files():
     packages=find_packages(exclude=["*.demo"]),
     zip_safe=False,
     install_requires=[
-        'Django',
         'django-js-asset',
     ],
     include_package_data=True,