Remove the now-empty member tables of the _io types

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

Author: eendebakpt

Modules/_io/bufferedio.c

@@ -2740,10 +2740,6 @@ static PyMethodDef bufferedrwpair_methods[] = {
     {NULL, NULL}
 };
 
-static PyMemberDef bufferedrwpair_members[] = {
-    {NULL}
-};
-
 static PyGetSetDef bufferedrwpair_getset[] = {
     _IO_BUFFEREDRWPAIR_CLOSED_GETSETDEF
     {NULL}
@@ -2755,7 +2751,6 @@ static PyType_Slot bufferedrwpair_slots[] = {
     {Py_tp_traverse, bufferedrwpair_traverse},
     {Py_tp_clear, bufferedrwpair_clear},
     {Py_tp_methods, bufferedrwpair_methods},
-    {Py_tp_members, bufferedrwpair_members},
     {Py_tp_getset, bufferedrwpair_getset},
     {Py_tp_init, _io_BufferedRWPair___init__},
     {0, NULL},

Modules/_io/bytesio.c

@@ -1239,10 +1239,6 @@ static struct PyMethodDef bytesio_methods[] = {
     {NULL, NULL}        /* sentinel */
 };
 
-static PyMemberDef bytesio_members[] = {
-    {NULL}
-};
-
 static PyType_Slot bytesio_slots[] = {
     {Py_tp_dealloc, bytesio_dealloc},
     {Py_tp_doc, (void *)_io_BytesIO___init____doc__},
@@ -1251,7 +1247,6 @@ static PyType_Slot bytesio_slots[] = {
     {Py_tp_iter, PyObject_SelfIter},
     {Py_tp_iternext, bytesio_iternext},
     {Py_tp_methods, bytesio_methods},
-    {Py_tp_members, bytesio_members},
     {Py_tp_getset, bytesio_getsetlist},
     {Py_tp_init, _io_BytesIO___init__},
     {Py_tp_new, bytesio_new},

Modules/_io/iobase.c

@@ -902,10 +902,6 @@ static PyGetSetDef iobase_getset[] = {
     {NULL}
 };
 
-static struct PyMemberDef iobase_members[] = {
-    {NULL},
-};
-
 
 static PyType_Slot iobase_slots[] = {
     {Py_tp_dealloc, iobase_dealloc},
@@ -915,7 +911,6 @@ static PyType_Slot iobase_slots[] = {
     {Py_tp_iter, iobase_iter},
     {Py_tp_iternext, iobase_iternext},
     {Py_tp_methods, iobase_methods},
-    {Py_tp_members, iobase_members},
     {Py_tp_getset, iobase_getset},
     {Py_tp_finalize, iobase_finalize},
     {0, NULL},

Modules/_io/stringio.c

@@ -1142,18 +1142,13 @@ static PyGetSetDef stringio_getset[] = {
     {NULL}
 };
 
-static struct PyMemberDef stringio_members[] = {
-    {NULL},
-};
-
 static PyType_Slot stringio_slots[] = {
     {Py_tp_dealloc, stringio_dealloc},
     {Py_tp_doc, (void *)_io_StringIO___init____doc__},
     {Py_tp_traverse, stringio_traverse},
     {Py_tp_clear, stringio_clear},
     {Py_tp_iternext, stringio_iternext},
     {Py_tp_methods, stringio_methods},
-    {Py_tp_members, stringio_members},
     {Py_tp_getset, stringio_getset},
     {Py_tp_init, _io_StringIO___init__},
     {Py_tp_new, stringio_new},