Update setup.py classifiers

Author: matiasb

setup.py

@@ -45,12 +45,11 @@
     classifiers=[
         'Intended Audience :: Developers',
         'Development Status :: 4 - Beta',
-        "Programming Language :: Python :: 2",
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
     ],
     test_suite='tests',
 )