Issue #12813: uuid.uuid4() no longer depends on ctypes

uuid.uuid4() always uses os.urandom() after 756d040aa8e8.

Author: berkerpeksag

Lib/test/test_uuid.py

@@ -354,7 +354,6 @@ def test_uuid3(self):
             equal(u, uuid.UUID(v))
             equal(str(u), v)
 
-    @unittest.skipUnless(importable('ctypes'), 'requires ctypes')
     def test_uuid4(self):
         equal = self.assertEqual