libbb: remove vdprintf

Two reasons:

* it's only built for GNU C Library versions < 2 (released 1997)

* it isn't used anywhere in BusyBox

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb/Kbuild.src

@@ -97,7 +97,6 @@ lib-y += time.o
 lib-y += trim.o
 lib-y += u_signal_names.o
 lib-y += uuencode.o
-lib-y += vdprintf.o
 lib-y += verror_msg.o
 lib-y += vfork_daemon_rexec.o
 lib-y += warn_ignoring_args.o

libbb/vdprintf.c

@@ -1,21 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Utility routines.
- *
- * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
- *
- * Licensed under GPLv2 or later, see file LICENSE in this source tree.
- */
-
-#include "libbb.h"
-
-#if defined(__GLIBC__) && __GLIBC__ < 2
-int FAST_FUNC vdprintf(int d, const char *format, va_list ap)
-{
-	char buf[8 * 1024];
-	int len;
-
-	len = vsnprintf(buf, sizeof(buf), format, ap);
-	return write(d, buf, len);
-}
-#endif