Drop dependancies django-picklefield and django-bootstrap3

setup.py

@@ -11,27 +11,6 @@ if __name__ == '__main__':
     # allow setup.py to be run from any path
     os.chdir(os.path.normpath(os.path.join(os.path.abspath(__file__), os.pardir)))
 
-
-    # if we have Django 1.8 available, use last version of django-boostrap3
-    try:
-        pkg_resources.require('Django >= 1.8')
-        django_bootstrap3 = 'django-bootstrap3 >= 5.4'
-        django = 'Django >= 1.8,<1.10'
-    except pkg_resources.VersionConflict:
-        # Else if we have django 1.7, we need django-boostrap3 < 7.0.0
-        try:
-            pkg_resources.require('Django >= 1.7')
-            django_bootstrap3 = 'django-bootstrap3 >= 5.4,<7.0.0'
-            django = 'Django >= 1.7,<1.8'
-        except (pkg_resources.VersionConflict, pkg_resources.DistributionNotFound):
-            # Else we need to install Django, assume version will be >= 1.8
-            django_bootstrap3 = 'django-bootstrap3 >= 5.4'
-            django = 'Django >= 1.8,<1.10'
-    # No version of django installed, assume version will be >= 1.8
-    except pkg_resources.DistributionNotFound:
-        django_bootstrap3 = 'django-bootstrap3 >= 5.4'
-        django = 'Django >= 1.8,<1.10'
-
     setup(
         name='django-cas-server',
         version=VERSION,
@@ -80,9 +59,8 @@ if __name__ == '__main__':
         },
         keywords=['django', 'cas', 'cas3', 'server', 'sso', 'single sign-on', 'authentication', 'auth'],
         install_requires=[
-            django, 'requests >= 2.4', 'requests_futures >= 0.9.5',
-            'django-picklefield >= 0.3.1', django_bootstrap3, 'lxml >= 3.4',
-            'six >= 1'
+            'Django >= 1.7,<1.10', 'requests >= 2.4', 'requests_futures >= 0.9.5',
+            'lxml >= 3.4', 'six >= 1'
         ],
         url="https://github.com/nitmir/django-cas-server",
         download_url="https://github.com/nitmir/django-cas-server/releases",