revert unnecessary changes

examples/src/python/example/python_distribution/hello/fasthello/hello_package/hello.py

@@ -7,7 +7,6 @@
 import c_greet
 import cpp_greet
 
-
 def hello():
   return '\n'.join([
     c_greet.c_greet(),

examples/src/python/example/python_distribution/hello/setup_requires/hello_package/hello.py

@@ -4,6 +4,5 @@
 
 from __future__ import absolute_import, division, print_function, unicode_literals
 
-
 def hello():
   return 'Hello, world!'

examples/src/python/example/python_distribution/hello/setup_requires/setup.py

@@ -7,7 +7,7 @@
 import os
 from setuptools import setup, find_packages
 
-# We require pycountry with setup_requires argument to this setup script's
+# We require pycountry with setup_requires argument to this setup script's 
 # corresponding python_dist.
 import pycountry
 

src/python/pants/backend/python/tasks/setup_py.py

@@ -8,7 +8,6 @@
 import itertools
 import os
 import pprint
-import re
 import shutil
 from abc import abstractmethod
 from builtins import map, object, str, zip
@@ -168,12 +167,6 @@ class SetupPyExecutionEnvironment(datatype([
     'linux': lambda: ['-shared'],
   }
 
-  # A "local" extension to a version string, as per
-  # https://www.python.org/dev/peps/pep-0440/#local-version-identifiers
-  PEP_0440_DISALLOWED_LOCAL = re.compile(r'[^a-zA-Z0-9\.]')
-  # Replace all the disallowed characters with dots.
-  _local_version_replacer_char = '.'
-
   def as_environment(self):
     ret = {}
 

testprojects/src/python/python_distribution/ctypes/ctypes_python_pkg/ctypes_wrapper.py

@@ -23,7 +23,6 @@ def get_generated_shared_lib(lib_name):
 asdf_c_lib = ctypes.CDLL(asdf_c_lib_path)
 asdf_cpp_lib = ctypes.CDLL(asdf_cpp_lib_path)
 
-
 def f(x):
   added = asdf_c_lib.add_three(x)
   multiplied = asdf_cpp_lib.multiply_by_three(added)

testprojects/src/python/python_distribution/fasthello_with_install_requires/hello_package/hello.py

@@ -8,7 +8,6 @@
 import c_greet
 import cpp_greet
 
-
 def hello():
   print(c_greet.c_greet())
   print(cpp_greet.cpp_greet())