Remove Python 2

Author: asmith26

setup.py

@@ -35,7 +35,6 @@ def test_suite():
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Science/Research',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.6'
     ],
     entry_points={