PYTHON-2002 Re-enable dns/srv tests

Author: behackett

test/test_dns.py

@@ -39,7 +39,6 @@ class TestDNS(unittest.TestCase):
 
 def create_test(test_case):
 
-    @unittest.skipIf(sys.version_info[0] < 3, "PYTHON-2002 fails on python 2")
     @client_context.require_replica_set
     @client_context.require_ssl
     def run_test(self):

test/test_srv_polling.py

@@ -88,7 +88,6 @@ class TestSrvPolling(unittest.TestCase):
 
     CONNECTION_STRING = "mongodb+srv://test1.test.build.10gen.cc"
 
-    @unittest.skipIf(sys.version_info[0] < 3, "PYTHON-2002 fails on python 2")
     def setUp(self):
         if not _HAVE_DNSPYTHON:
             raise unittest.SkipTest("SRV polling tests require the dnspython "