remove Python 2 from the classifiers

Author: michiya

setup.py

@@ -8,8 +8,6 @@
     'License :: OSI Approved :: BSD License',
     'Framework :: Django',
     'Programming Language :: Python',
-    'Programming Language :: Python :: 2',
-    'Programming Language :: Python :: 2.7',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3.4',
     'Programming Language :: Python :: 3.5',