Discontinue HPUX support

cde/lib/DtSvc/DtUtil2/FileUtil.c

@@ -37,15 +37,11 @@
 #include <sys/param.h>		/* MAXPATHLEN */
 #include <errno.h>		/* errno(2) */
 
-#ifdef __hpux
-#include <ndir.h>		/* opendir(), directory(3C) */
-#else
 #if defined(sun) || defined(CSRG_BASED)
 #include <dirent.h>		/* opendir(), directory(3C) */
 #else
 #include <sys/dir.h>
 #endif /* sun || CSRG_BASED */
-#endif /* __hpux */
 
 #include <X11/Xlib.h>
 #include <X11/Intrinsic.h>	/* Xt stuff */