Remove pre-Python-2.6 BBB cruft.

src/zope/proxy/_zope_proxy_proxy.c

@@ -885,12 +885,6 @@ wrap_methods[] = {
  * be associated with the wrapper itself.
  */
 
-// Python < 2.6	support:
-#ifndef PyVarObject_HEAD_INIT
-    #define PyVarObject_HEAD_INIT(type, size) \
-	PyObject_HEAD_INIT(type) size,
-#endif
-
 
 static PyTypeObject
 ProxyType = {

src/zope/proxy/proxy.h

 #ifndef _proxy_H_
 #define _proxy_H_ 1
 
-#if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
-typedef int Py_ssize_t;
-#define PY_SSIZE_T_MAX INT_MAX
-#define PY_SSIZE_T_MIN INT_MIN
-typedef Py_ssize_t (*lenfunc)(PyObject *);
-typedef PyObject *(*ssizeargfunc)(PyObject *, Py_ssize_t);
-typedef PyObject *(*ssizessizeargfunc)(PyObject *, Py_ssize_t, Py_ssize_t);
-typedef int(*ssizeobjargproc)(PyObject *, Py_ssize_t, PyObject *);
-typedef int(*ssizessizeobjargproc)(PyObject *, Py_ssize_t, Py_ssize_t, PyObject *);
-#endif
-
 typedef struct {
     PyObject_HEAD
     PyObject *proxy_object;