kill FTS_CHDIRROOT flag, it is broken beyond repair and no longer used

src/include/fts.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: fts.h,v 1.3 1997/09/21 10:45:34 niklas Exp $	*/
+/*	$OpenBSD: fts.h,v 1.4 1999/10/03 19:22:22 millert Exp $	*/
 /*	$NetBSD: fts.h,v 1.5 1994/12/28 01:41:50 mycroft Exp $	*/
 
 /*
@@ -58,8 +58,7 @@ typedef struct {
 #define	FTS_SEEDOT	0x0020		/* return dot and dot-dot */
 #define	FTS_XDEV	0x0040		/* don't cross devices */
 #define	FTS_WHITEOUT	0x0080		/* return whiteout information */
-#define	FTS_CHDIRROOT	0x0100		/* chdir to root of tree not orig cwd */
-#define	FTS_OPTIONMASK	0x0fff		/* valid user option mask */
+#define	FTS_OPTIONMASK	0x00ff		/* valid user option mask */
 
 #define	FTS_NAMEONLY	0x1000		/* (private) child names only */
 #define	FTS_STOP	0x2000		/* (private) unrecoverable error */