Revert "Marked a test as an expected failure on MySQL and Python 3.2."

This reverts commit 832b4a57.
We officially don't support MySQL on Python 3.2. Refs #20380.

tests/model_regress/tests.py

@@ -2,14 +2,12 @@ from __future__ import unicode_literals
 
 import datetime
 from operator import attrgetter
-import sys
-import unittest
 
 from django.core.exceptions import ValidationError
 from django.test import TestCase, skipUnlessDBFeature
 from django.utils import six
 from django.utils.timezone import get_fixed_timezone
-from django.db import connection, router
+from django.db import router
 from django.db.models.sql import InsertQuery
 
 from .models import (Worker, Article, Party, Event, Department,
@@ -144,11 +142,6 @@ class ModelTests(TestCase):
             attrgetter("when")
         )
 
-    if (3,) <= sys.version_info < (3, 3) and connection.vendor == 'mysql':
-        # In Python < 3.3, datetime.strftime raises an exception for years
-        # below 1000, and existing MySQL DB-API drivers hit this problem.
-        test_date_lookup = unittest.expectedFailure(test_date_lookup)
-
     def test_date_filter_null(self):
         # Date filtering was failing with NULL date values in SQLite
         # (regression test for #3501, among other things).