diff --git a/Include/objimpl.h b/Include/objimpl.h
index 2980031..4f72faf 100644
--- a/Include/objimpl.h
+++ b/Include/objimpl.h
@@ -242,9 +242,6 @@ PyAPI_FUNC(PyVarObject *) _PyObject_GC_Resize(PyVarObject *, Py_ssize_t);
 #define PyObject_GC_Resize(type, op, n) \
                 ( (type *) _PyObject_GC_Resize((PyVarObject *)(op), (n)) )
 
-/* for source compatibility with 2.2 */
-#define _PyObject_GC_Del PyObject_GC_Del
-
 /* GC information is stored BEFORE the object structure. */
 typedef union _gc_head {
     struct {
@@ -327,15 +324,6 @@ PyAPI_FUNC(void) PyObject_GC_Del(void *);
         }                                                               \
     } while (0)
 
-/* This is here for the sake of backwards compatibility.  Extensions that
- * use the old GC API will still compile but the objects will not be
- * tracked by the GC. */
-#define PyGC_HEAD_SIZE 0
-#define PyObject_GC_Init(op)
-#define PyObject_GC_Fini(op)
-#define PyObject_AS_GC(op) (op)
-#define PyObject_FROM_GC(op) (op)
-
 
 /* Test if a type supports weak references */
 #define PyType_SUPPORTS_WEAKREFS(t) ((t)->tp_weaklistoffset > 0)
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c
index 3f96c42..afb71ab 100644
--- a/Modules/gcmodule.c
+++ b/Modules/gcmodule.c
@@ -1511,11 +1511,3 @@ PyObject_GC_Del(void *op)
     }
     PyObject_FREE(g);
 }
-
-/* for binary compatibility with 2.2 */
-#undef _PyObject_GC_Del
-void
-_PyObject_GC_Del(PyObject *op)
-{
-    PyObject_GC_Del(op);
-}