Remove from undocumented list.

Author: ZeroIntensity

Tools/check-c-api-docs/ignored_c_api.txt

@@ -24,9 +24,6 @@ PyABIInfo_FREETHREADING_AGNOSTIC
 PyModuleDef_Type
 # object.h
 Py_INVALID_SIZE
-Py_TPFLAGS_HAVE_VERSION_TAG
-Py_TPFLAGS_INLINE_VALUES
-Py_TPFLAGS_IS_ABSTRACT
 # pyexpat.h
 PyExpat_CAPI_MAGIC
 PyExpat_CAPSULE_NAME