remove undefinedlike
@@ -140,10 +140,7 @@ class UndefinedType(object):
# But for now, we'll add an annotation to indicate that the type checker
# should permit any value passed to a function argument whose default
# value is Undefined.
-UndefinedLike = Any
-
-
-Undefined: UndefinedLike = UndefinedType()
+Undefined: Any = UndefinedType()
class SchemaBase(object):
