Remove Py_UNUSED macro from _block.c
#include <lz4.h>
#include <lz4hc.h>
-#ifndef Py_UNUSED /* This is already defined for Python 3.4 onwards */
-#ifdef __GNUC__
-#define Py_UNUSED(name) _unused_ ## name __attribute__((unused))
-#else
-#define Py_UNUSED(name) _unused_ ## name
-#endif
-#endif
-
#if defined(_WIN32) && defined(_MSC_VER)
#if _MSC_VER >= 1600
#include <stdint.h>
