Remove __future__ for libraries builtin in python 3. (#874)

Author: janiversen

examples/common/custom_datablock.py

@@ -4,7 +4,6 @@
 This is an example of performing custom logic after a value has been
 written to the datastore.
 """
-from __future__ import print_function
 import logging
 
 # --------------------------------------------------------------------------- #

examples/common/performance.py

@@ -7,7 +7,6 @@
 # --------------------------------------------------------------------------- #
 # import the necessary modules
 # --------------------------------------------------------------------------- #
-from __future__ import print_function
 import logging
 import os
 from threading import Lock, Thread as tWorker

examples/contrib/message_parser.py

@@ -12,7 +12,7 @@
 # -------------------------------------------------------------------------- #
 # import needed libraries
 # -------------------------------------------------------------------------- #
-from __future__ import print_function
+
 import logging
 import collections
 import textwrap

ez_setup.py

@@ -1,6 +1,5 @@
 #!python
-"""Ez_setup"""
-from __future__ import print_function
+"""Ez_setup."""
 import os
 import sys
 """Bootstrap setuptools installation

pymodbus/client/asynchronous/factory/__init__.py

@@ -1,2 +1 @@
 """Factory class."""
-from __future__ import absolute_import, unicode_literals

pymodbus/client/asynchronous/factory/serial.py

@@ -1,6 +1,4 @@
 """Factory to create asynchronous serial clients based on twisted/tornado/asyncio."""
-from __future__ import unicode_literals
-from __future__ import absolute_import
 import logging
 import asyncio
 

pymodbus/client/asynchronous/factory/tcp.py

@@ -1,6 +1,4 @@
 """Factory to create asynchronous tcp clients based on twisted/tornado/asyncio."""
-from __future__ import unicode_literals
-from __future__ import absolute_import
 import logging
 import asyncio
 

pymodbus/client/asynchronous/factory/tls.py

@@ -1,6 +1,4 @@
 """Factory to create asynchronous tls clients based on asyncio."""
-from __future__ import unicode_literals
-from __future__ import absolute_import
 import logging
 import asyncio
 

pymodbus/client/asynchronous/factory/udp.py

@@ -1,6 +1,4 @@
 """UDP implementation."""
-from __future__ import unicode_literals
-from __future__ import absolute_import
 import logging
 import asyncio
 

pymodbus/client/asynchronous/schedulers/__init__.py

@@ -1,5 +1,4 @@
 """Backend schedulers to use with generic Async clients."""
-from __future__ import unicode_literals
 
 REACTOR = "reactor"
 IO_LOOP = "io_loop"