cpio: internalize archive_xread_all_eof. add a few paranoia checks

 for corrupted cpio files.
modprobe-small: remove stray include
route: small code shrink

function                                             old     new   delta
get_header_cpio                                      958     980     +22
archive_xread_all_eof                                 33       -     -33
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 22/-33)            Total: -11 bytes

1 files changed, 0 insertions, 1 deletions

diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index 517c103d5..ae7c29cd1 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -9,7 +9,6 @@
  */
 
 #include "libbb.h"
-#include "unarchive.h"
 
 #include <sys/utsname.h> /* uname() */
 #include <fnmatch.h>