staging: rtl8712: remove unused inline _RND512()

Signed-off-by: James A Shackleford <shack@linux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/osdep_service.h

@@ -184,10 +184,5 @@ static inline void flush_signals_thread(void)
 		flush_signals(current);
 }
 
-static inline u32 _RND512(u32 sz)
-{
-	return ((sz >> 9) + ((sz & 511) ? 1 : 0)) << 9;
-}
-
 #endif