Remove __future__ imports from tests

tests/mockserver.py

@@ -1,4 +1,3 @@
-from __future__ import print_function
 import sys, time, random, os, json
 from six.moves.urllib.parse import urlencode
 from subprocess import Popen, PIPE

tests/test_downloadermiddleware_httpcache.py

@@ -1,4 +1,3 @@
-from __future__ import print_function
 import time
 import tempfile
 import shutil

tests/test_downloadermiddleware_robotstxt.py

@@ -1,6 +1,4 @@
 # -*- coding: utf-8 -*-
-from __future__ import absolute_import
-
 from unittest import mock
 
 from twisted.internet import reactor, error

tests/test_engine.py

@@ -10,7 +10,6 @@ module with the ``runserver`` argument::
     python test_engine.py runserver
 """
 
-from __future__ import print_function
 import sys, os, re
 from six.moves.urllib.parse import urlparse
 

tests/test_exporters.py

@@ -1,4 +1,3 @@
-from __future__ import absolute_import
 import re
 import json
 import marshal

tests/test_feedexport.py

@@ -1,4 +1,3 @@
-from __future__ import absolute_import
 import os
 import csv
 import json

tests/test_pipeline_media.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import sys
 
 from testfixtures import LogCapture

tests/test_utils_deprecate.py

@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-from __future__ import absolute_import
 import inspect
 import unittest
 from unittest import mock

tests/test_utils_log.py

@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-from __future__ import print_function
 import sys
 import logging
 import unittest

tests/test_utils_request.py

@@ -1,4 +1,3 @@
-from __future__ import print_function
 import unittest
 from scrapy.http import Request
 from scrapy.utils.request import request_fingerprint, _fingerprint_cache, \