[3.10] bpo-44559: [Enum] revert enum module to 3.9 (GH-27010)

* [Enum] revert enum module to 3.9
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 828d1f3..a59afd4 100755
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -1518,9 +1518,9 @@ def testGetaddrinfo(self):
         infos = socket.getaddrinfo(HOST, 80, socket.AF_INET, socket.SOCK_STREAM)
         for family, type, _, _, _ in infos:
             self.assertEqual(family, socket.AF_INET)
-            self.assertEqual(str(family), 'AF_INET')
+            self.assertEqual(str(family), 'AddressFamily.AF_INET')
             self.assertEqual(type, socket.SOCK_STREAM)
-            self.assertEqual(str(type), 'SOCK_STREAM')
+            self.assertEqual(str(type), 'SocketKind.SOCK_STREAM')
         infos = socket.getaddrinfo(HOST, None, 0, socket.SOCK_STREAM)
         for _, socktype, _, _, _ in infos:
             self.assertEqual(socktype, socket.SOCK_STREAM)
@@ -1794,8 +1794,8 @@ def test_str_for_enums(self):
         # Make sure that the AF_* and SOCK_* constants have enum-like string
         # reprs.
         with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
-            self.assertEqual(str(s.family), 'AF_INET')
-            self.assertEqual(str(s.type), 'SOCK_STREAM')
+            self.assertEqual(str(s.family), 'AddressFamily.AF_INET')
+            self.assertEqual(str(s.type), 'SocketKind.SOCK_STREAM')
 
     def test_socket_consistent_sock_type(self):
         SOCK_NONBLOCK = getattr(socket, 'SOCK_NONBLOCK', 0)
@@ -1942,41 +1942,6 @@ def test_socket_fileno_requires_socket_fd(self):
                     fileno=afile.fileno())
             self.assertEqual(cm.exception.errno, errno.ENOTSOCK)
 
-    def test_addressfamily_enum(self):
-        import _socket, enum
-        CheckedAddressFamily = enum._old_convert_(
-                enum.IntEnum, 'AddressFamily', 'socket',
-                lambda C: C.isupper() and C.startswith('AF_'),
-                source=_socket,
-                )
-        enum._test_simple_enum(CheckedAddressFamily, socket.AddressFamily)
-
-    def test_socketkind_enum(self):
-        import _socket, enum
-        CheckedSocketKind = enum._old_convert_(
-                enum.IntEnum, 'SocketKind', 'socket',
-                lambda C: C.isupper() and C.startswith('SOCK_'),
-                source=_socket,
-                )
-        enum._test_simple_enum(CheckedSocketKind, socket.SocketKind)
-
-    def test_msgflag_enum(self):
-        import _socket, enum
-        CheckedMsgFlag = enum._old_convert_(
-                enum.IntFlag, 'MsgFlag', 'socket',
-                lambda C: C.isupper() and C.startswith('MSG_'),
-                source=_socket,
-                )
-        enum._test_simple_enum(CheckedMsgFlag, socket.MsgFlag)
-
-    def test_addressinfo_enum(self):
-        import _socket, enum
-        CheckedAddressInfo = enum._old_convert_(
-                enum.IntFlag, 'AddressInfo', 'socket',
-                lambda C: C.isupper() and C.startswith('AI_'),
-                source=_socket)
-        enum._test_simple_enum(CheckedAddressInfo, socket.AddressInfo)
-
 
 @unittest.skipUnless(HAVE_SOCKET_CAN, 'SocketCan required for this test.')
 class BasicCANTest(unittest.TestCase):