[1.2.X] Fixed wrong import introduced in r15697.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15725 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/conditional_processing/models.py

@@ -2,7 +2,6 @@
 from datetime import datetime
 
 from django.test import TestCase
-from django.utils import unittest
 from django.utils.http import parse_etags, quote_etag, parse_http_date
 
 FULL_RESPONSE = 'Test conditional get response'
@@ -127,7 +126,7 @@ def testInvalidETag(self):
         self.assertFullResponse(response, check_last_modified=False)
 
 
-class ETagProcessing(unittest.TestCase):
+class ETagProcessing(TestCase):
     def testParsing(self):
         etags = parse_etags(r'"", "etag", "e\"t\"ag", "e\\tag", W/"weak"')
         self.assertEquals(etags, ['', 'etag', 'e"t"ag', r'e\tag', 'weak'])
@@ -137,7 +136,7 @@ def testQuoting(self):
         self.assertEquals(quoted_etag, r'"e\\t\"ag"')
 
 
-class HttpDateProcessing(unittest.TestCase):
+class HttpDateProcessing(TestCase):
     def testParsingRfc1123(self):
         parsed = parse_http_date('Sun, 06 Nov 1994 08:49:37 GMT')
         self.assertEqual(datetime.utcfromtimestamp(parsed),