Remove type __frozendict__

Author: vstinner

Objects/typeobject.c

@@ -4891,37 +4891,6 @@ type_new_init(type_new_ctx *ctx)
 }
 
 
-static int
-type_new_frozendict(PyTypeObject *type)
-{
-    PyObject *__frozendict__;
-    if (PyDict_GetItemStringRef(type->tp_dict, "__frozendict__",
-                                &__frozendict__) < 0) {
-        return -1;
-    }
-    if (__frozendict__ == NULL) {
-        return 0;
-    }
-    int is_true = PyObject_IsTrue(__frozendict__);
-    Py_DECREF(__frozendict__);
-    if (is_true < 0) {
-        return -1;
-    }
-    if (!is_true) {
-        return 0;
-    }
-
-    PyObject *frozendict;
-    frozendict = PyObject_CallOneArg((PyObject*)&PyFrozenDict_Type, type->tp_dict);
-    if (frozendict == NULL) {
-        return -1;
-    }
-
-    Py_SETREF(type->tp_dict, frozendict);
-    return 0;
-}
-
-
 static PyObject*
 type_new_impl(type_new_ctx *ctx)
 {
@@ -4961,10 +4930,6 @@ type_new_impl(type_new_ctx *ctx)
         goto error;
     }
 
-    if (type_new_frozendict(type) < 0) {
-        goto error;
-    }
-
     assert(_PyType_CheckConsistency(type));
 #if defined(Py_GIL_DISABLED) && defined(Py_DEBUG) && SIZEOF_VOID_P > 4
     // After this point, other threads can potentally use this type.