Remove redundant inline macro def.

The inline macro already exists in include/share/compat.h.

Patch-from: lvqcl <lvqcl.mail@gmail.com>

src/libFLAC/include/private/macros.h

@@ -69,10 +69,4 @@
 #define MAX(x,y)	((x) >= (y) ? (x) : (y))
 #endif
 
-#if !defined(__cplusplus) && defined(_MSC_VER)
-#ifndef inline
-#define inline __inline
-#endif
-#endif
-
 #endif