Lose ln to toybox.

I accidentally enabled the toybox ln in my original commit, so which ln
you've been running for the last few weeks has depended on which directory
you built more recently...

Change-Id: If73783477aa4eb4d058d6e170d6291ba0d9c5f40
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index 57ee1d3..644d635 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -68,13 +68,6 @@
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
-LOCAL_SRC_FILES := upstream-netbsd/bin/ln/ln.c
-LOCAL_CFLAGS += $(common_cflags) -Dmain=ln_main
-LOCAL_MODULE := libtoolbox_ln
-LOCAL_ADDITIONAL_DEPENDENCIES += $(LOCAL_PATH)/Android.mk
-include $(BUILD_STATIC_LIBRARY)
-
-include $(CLEAR_VARS)
 LOCAL_SRC_FILES := upstream-netbsd/bin/mv/mv.c
 LOCAL_CFLAGS += $(common_cflags) -Dmain=mv_main -D__SVR4
 LOCAL_MODULE := libtoolbox_mv
@@ -98,7 +91,6 @@
     dd \
     du \
     grep \
-    ln \
     mv \
     rm \
 
diff --git a/toolbox/upstream-netbsd/bin/ln/ln.c b/toolbox/upstream-netbsd/bin/ln/ln.c
deleted file mode 100644
index 9127477..0000000
--- a/toolbox/upstream-netbsd/bin/ln/ln.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/* $NetBSD: ln.c,v 1.35 2011/08/29 14:38:30 joerg Exp $ */
-
-/*
- * Copyright (c) 1987, 1993, 1994
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1987, 1993, 1994\
- The Regents of the University of California.  All rights reserved.");
-#endif /* not lint */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)ln.c	8.2 (Berkeley) 3/31/94";
-#else
-__RCSID("$NetBSD: ln.c,v 1.35 2011/08/29 14:38:30 joerg Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/param.h>
-#include <sys/stat.h>
-
-#include <err.h>
-#include <errno.h>
-#include <locale.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-static int	fflag;				/* Unlink existing files. */
-static int	hflag;				/* Check new name for symlink first. */
-static int	iflag;				/* Interactive mode. */
-static int	sflag;				/* Symbolic, not hard, link. */
-static int	vflag;                          /* Verbose output */
-
-					/* System link call. */
-static int (*linkf)(const char *, const char *);
-static char   linkch;
-
-static int	linkit(const char *, const char *, int);
-__dead static void	usage(void);
-
-int
-main(int argc, char *argv[])
-{
-	struct stat sb;
-	int ch, exitval;
-	char *sourcedir;
-
-	setprogname(argv[0]);
-	(void)setlocale(LC_ALL, "");
-
-	while ((ch = getopt(argc, argv, "fhinsv")) != -1)
-		switch (ch) {
-		case 'f':
-			fflag = 1;
-			iflag = 0;
-			break;
-		case 'h':
-		case 'n':
-			hflag = 1;
-			break;
-		case 'i':
-			iflag = 1;
-			fflag = 0;
-			break;
-		case 's':
-			sflag = 1;
-			break;
-		case 'v':               
-			vflag = 1;
-			break;
-		case '?':
-		default:
-			usage();
-			/* NOTREACHED */
-		}
-
-	argv += optind;
-	argc -= optind;
-
-	if (sflag) {
-		linkf  = symlink;
-		linkch = '-';
-	} else {
-		linkf  = link;
-		linkch = '=';
-	}
-
-	switch(argc) {
-	case 0:
-		usage();
-		/* NOTREACHED */
-	case 1:				/* ln target */
-		exit(linkit(argv[0], ".", 1));
-		/* NOTREACHED */
-	case 2:				/* ln target source */
-		exit(linkit(argv[0], argv[1], 0));
-		/* NOTREACHED */
-	}
-
-					/* ln target1 target2 directory */
-	sourcedir = argv[argc - 1];
-	if (hflag && lstat(sourcedir, &sb) == 0 && S_ISLNK(sb.st_mode)) {
-		/* we were asked not to follow symlinks, but found one at
-		   the target--simulate "not a directory" error */
-		errno = ENOTDIR;
-		err(EXIT_FAILURE, "%s", sourcedir);
-		/* NOTREACHED */
-	}
-	if (stat(sourcedir, &sb)) {
-		err(EXIT_FAILURE, "%s", sourcedir);
-		/* NOTREACHED */
-	}
-	if (!S_ISDIR(sb.st_mode)) {
-		usage();
-		/* NOTREACHED */
-	}
-	for (exitval = 0; *argv != sourcedir; ++argv)
-		exitval |= linkit(*argv, sourcedir, 1);
-	exit(exitval);
-	/* NOTREACHED */
-}
-
-static int
-linkit(const char *target, const char *source, int isdir)
-{
-	struct stat sb;
-	const char *p;
-	char path[MAXPATHLEN];
-	int ch, exists, first;
-
-	if (!sflag) {
-		/* If target doesn't exist, quit now. */
-		if (stat(target, &sb)) {
-			warn("%s", target);
-			return (1);
-		}
-	}
-
-	/* If the source is a directory (and not a symlink if hflag),
-	   append the target's name. */
-	if (isdir ||
-	    (!lstat(source, &sb) && S_ISDIR(sb.st_mode)) ||
-	    (!hflag && !stat(source, &sb) && S_ISDIR(sb.st_mode))) {
-		if ((p = strrchr(target, '/')) == NULL)
-			p = target;
-		else
-			++p;
-		(void)snprintf(path, sizeof(path), "%s/%s", source, p);
-		source = path;
-	}
-
-	exists = !lstat(source, &sb);
-
-	/*
-	 * If the file exists, then unlink it forcibly if -f was specified
-	 * and interactively if -i was specified.
-	 */
-	if (fflag && exists) {
-		if (unlink(source)) {
-			warn("%s", source);
-			return (1);
-		}
-	} else if (iflag && exists) {
-		fflush(stdout);
-		(void)fprintf(stderr, "replace %s? ", source);
-
-		first = ch = getchar();
-		while (ch != '\n' && ch != EOF)
-			ch = getchar();
-		if (first != 'y' && first != 'Y') {
-			(void)fprintf(stderr, "not replaced\n");
-			return (1);
-		}
-
-		if (unlink(source)) {
-			warn("%s", source);
-			return (1);
-		}
-	}
-
-	/* Attempt the link. */
-	if ((*linkf)(target, source)) {
-		warn("%s", source);
-		return (1);
-	}
-	if (vflag)
-		(void)printf("%s %c> %s\n", source, linkch, target);
-
-	return (0);
-}
-
-static void
-usage(void)
-{
-
-	(void)fprintf(stderr,
-	    "usage:\t%s [-fhinsv] file1 file2\n\t%s [-fhinsv] file ... directory\n",
-	    getprogname(), getprogname());
-	exit(1);
-	/* NOTREACHED */
-}