tectonic/dpx-dpxfile: remove useless defines

Author: ronnychevalier

build.rs

@@ -251,8 +251,6 @@ fn main() {
         .define("HAVE_LIBPNG", Some("1"))
         .define("HAVE_MKSTEMP", Some("1"))
         .define("HAVE_STDINT_H", Some("1"))
-        .define("HAVE_SYS_TYPES_H", Some("1"))
-        .define("HAVE_SYS_WAIT_H", Some("1"))
         .define("HAVE_TM_GMTOFF", Some("1"))
         .define("HAVE_ZLIB", Some("1"))
         .define("HAVE_ZLIB_COMPRESS2", Some("1"))

tectonic/dpx-dpxfile.c

@@ -35,18 +35,7 @@
 
 #define MAX_KEY_LEN 16
 
-/*#include <kpathsea/lib.h>*/
 #include <string.h>
-#if HAVE_SYS_WAIT_H
-#include <sys/wait.h>
-#endif
-#ifndef WEXITSTATUS
-#define WEXITSTATUS(val) ((unsigned)(val) >> 8)
-#endif
-#ifndef WIFEXITED
-#define WIFEXITED(val) (((val) & 255) == 0)
-#endif
-
 
 static int verbose = 0;
 int keep_cache = 0;