Fixed the python versions in setup.py (not tested using python 3)

Author: davromaniak

setup.py

@@ -28,8 +28,6 @@
         'Natural Language :: English',
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'License :: OSI Approved :: Apache Software License',
         'Topic :: System :: Monitoring',
     ],