removed duplicate

tests/server/util.h

@@ -46,8 +46,6 @@ void logmsg(const char *msg, ...);
 #define ENOTSOCK     WSAENOTSOCK
 #define ECONNREFUSED WSAECONNREFUSED
 
-static void win32_cleanup(void);
-
 #if defined(ENABLE_IPV6) && defined(__MINGW32__)
 const struct in6_addr in6addr_any = {{ IN6ADDR_ANY_INIT }};
 #endif