removal of commented-out cruft

archival/libunarchive/get_header_tar_bz2.c

@@ -3,13 +3,6 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
 #include "libbb.h"
 #include "unarchive.h"