Revert "readd unwrap macro"

This reverts commit f8d0fbb.

Author: prakashsellathurai

Objects/weakrefobject.c

@@ -557,21 +557,6 @@ _proxy_unwrap(PyObject **op, int *did_incref)
     return 1;
 }
 
-/* If a parameter is a proxy, check that it is still "live" and wrap it,
- * replacing the original value with the raw object.  Raises ReferenceError
- * if the param is a dead proxy.
- */
-#define UNWRAP(o) \
-        if (PyWeakref_CheckProxy(o)) { \
-            o = _PyWeakref_GET_REF(o); \
-            if (!proxy_check_ref(o)) { \
-                return NULL; \
-            } \
-        } \
-        else { \
-            Py_INCREF(o); \
-        }
-
 #define WRAP_UNARY(method, generic) \
     static PyObject * \
     method(PyObject *proxy) { \