gh-106320: Remove private _PyObject_GetState()

Include/internal/pycore_object.h

@@ -442,6 +442,10 @@ extern int _PyObject_IsAbstract(PyObject *);
 extern int _PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method);
 extern PyObject* _PyObject_NextNotImplemented(PyObject *);
 
+// Pickle support.
+// Export for '_datetime' shared extension
+PyAPI_FUNC(PyObject*) _PyObject_GetState(PyObject *);
+
 /* C function call trampolines to mitigate bad function pointer casts.
  *
  * Typical native ABIs ignore additional arguments or fill in missing

Include/object.h

@@ -437,12 +437,6 @@ PyAPI_FUNC(void) PyObject_ClearWeakRefs(PyObject *);
 */
 PyAPI_FUNC(PyObject *) PyObject_Dir(PyObject *);
 
-/* Pickle support. */
-#ifndef Py_LIMITED_API
-PyAPI_FUNC(PyObject *) _PyObject_GetState(PyObject *);
-#endif
-
-
 /* Helpers for printing recursive container types */
 PyAPI_FUNC(int) Py_ReprEnter(PyObject *);
 PyAPI_FUNC(void) Py_ReprLeave(PyObject *);