make: unifdef SUN5_0 (defined)

@@ -34,15 +34,11 @@
 
 
 /*
  * Included files
  */
-#if defined(SUN5_0) || defined(HP_UX)
 #include <dirent.h>             /* opendir() */
-#else
-#include <sys/dir.h>            /* opendir() */
-#endif
 #include <errno.h>              /* errno */
 #include <mk/defs.h>
 #include <mksh/macro.h>         /* getvar() */
 #include <mksh/misc.h>          /* get_prop(), append_prop() */
 #include <sys/stat.h>           /* lstat() */

@@ -304,16 +300,12 @@
         wchar_t                 *plain_file_name_p;
         Name                    plain_file;
         wchar_t                 tmp_wcs_buffer[MAXPATHLEN];
         DIR                     *dir_fd;
         int                     m_local_dependency=0;
-#if defined(SUN5_0) || defined(HP_UX)
 #define d_fileno d_ino
         register struct dirent  *dp;
-#else
-        register struct direct  *dp;
-#endif
         wchar_t                 *vpath = NULL;
         wchar_t                 *p;
         int                     result = 0;
 
         if(dir->hash.length >= MAXPATHLEN) {