don't define NEED_COPY_HOSTENT in the decleration

libraries/libldap/util-int.c

@@ -98,7 +98,6 @@ char *ldap_pvt_ctime( const time_t *tp, char *buf )
 static char *safe_realloc( char **buf, int len );
 
 #if !defined(HAVE_GETHOSTBYNAME_R) && defined(LDAP_R_COMPILE)
-# define NEED_COPY_HOSTENT
 static int copy_hostent( struct hostent *res, char **buf, struct hostent * src );
 #endif