fix classifiers

Author: penguinolog

setup.py

@@ -217,7 +217,6 @@ def get_simple_vars_from_src(src):
     "Topic :: Software Development :: Libraries :: Python Modules",
     "License :: OSI Approved :: Apache Software License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.4",
     "Programming Language :: Python :: 3.5",
     "Programming Language :: Python :: 3.6",
     "Programming Language :: Python :: 3.7",