bpo-29943: Remove the PySlice_GetIndicesEx() macro. (#1050)

diff --git a/Include/sliceobject.h b/Include/sliceobject.h
index 71e2818..a10cc05 100644
--- a/Include/sliceobject.h
+++ b/Include/sliceobject.h
@@ -38,11 +38,6 @@
 				    Py_ssize_t *start, Py_ssize_t *stop, 
 				    Py_ssize_t *step, Py_ssize_t *slicelength);
 
-#define PySlice_GetIndicesEx(slice, length, start, stop, step, slicelen) (  \
-    _PySlice_Unpack((PyObject *)(slice), (start), (stop), (step)) < 0 ?     \
-    ((*(slicelen) = 0), -1) :                                               \
-    ((*(slicelen) = _PySlice_AdjustIndices((length), (start), (stop), *(step))), \
-     0))
 PyAPI_FUNC(int) _PySlice_Unpack(PyObject *slice,
                                 Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step);
 PyAPI_FUNC(Py_ssize_t) _PySlice_AdjustIndices(Py_ssize_t length,
diff --git a/Misc/NEWS b/Misc/NEWS
index a090820..f2bd997 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -111,11 +111,6 @@
 - Issue #28925: cPickle now correctly propagates errors when unpickle instances
   of old-style classes.
 
-C API
------
-
-- Issue #27867: Function PySlice_GetIndicesEx() is replaced with a macro.
-
 Documentation
 -------------