Description: Remove unneeded internal header inclusion

This header isn't needed any more and isn't part of the glibc external
API so we can't build without it.

Author: Mark Brown <broonie@debian.org>
Forwarded: no
Last-Update: 2015-11-07

--- yp-tools-3.3.orig/nss_nis6/nis-hosts.c
+++ yp-tools-3.3/nss_nis6/nis-hosts.c
@@ -35,9 +35,6 @@
 #include "libc-lock.h"
 #include "nss-nis6.h"
 
-/* Get implementation for some internal functions. */
-#include <resolv/mapv4v6addr.h>
-
 #define ENTNAME         hostent
 #define DATABASE        "hosts"
 #define NEED_H_ERRNO
