Remove Python 2 specific code from tests

Author: oschwald

tests/decoder_test.py

@@ -2,16 +2,11 @@
 # -*- coding: utf-8 -*-
 
 import mmap
-import sys
 
 from maxminddb.decoder import Decoder
 
 import unittest
 
-if sys.version_info[0] == 2:
-    unittest.TestCase.assertRaisesRegex = unittest.TestCase.assertRaisesRegexp
-    unittest.TestCase.assertRegex = unittest.TestCase.assertRegexpMatches
-
 
 class TestDecoder(unittest.TestCase):
     def test_arrays(self):

tests/reader_test.py

@@ -5,6 +5,7 @@
 import os
 import sys
 import threading
+import unittest
 from multiprocessing import Process, Pipe
 
 import mock
@@ -26,15 +27,6 @@
     MODE_FD,
 )
 
-if sys.version_info[:2] == (2, 6):
-    import unittest2 as unittest
-else:
-    import unittest
-
-if sys.version_info[0] == 2:
-    unittest.TestCase.assertRaisesRegex = unittest.TestCase.assertRaisesRegexp
-    unittest.TestCase.assertRegex = unittest.TestCase.assertRegexpMatches
-
 
 def get_reader_from_file_descriptor(filepath, mode):
     """Patches open_database() for class TestFDReader()."""
@@ -432,14 +424,6 @@ def test_multiprocessing(self):
     def test_threading(self):
         self._check_concurrency(threading.Thread)
 
-    if sys.version_info[0] == 2:
-
-        def test_byte_ip_on_python2(self):
-            reader = open_database(
-                "tests/data/test-data/MaxMind-DB-test-decoder.mmdb", self.mode
-            )
-            record = reader.get(b"::1.1.1.0")
-
     def _check_concurrency(self, worker_class):
         reader = open_database(
             "tests/data/test-data/GeoIP2-Domain-Test.mmdb", self.mode