mkuboot(8): reduce usage()

[Jason McIntyre]

hi.

diff to reduce verbosity in mkuboot(8) usage. i don;t have the means to
build this one.

ok?
jmc

Index: mkuboot.c
===================================================================
RCS file: /cvs/src/usr.sbin/mkuboot/mkuboot.c,v
retrieving revision 1.10
diff -u -p -r1.10 mkuboot.c
--- mkuboot.c   1 Jun 2021 02:59:01 -0000       1.10
+++ mkuboot.c   22 Jun 2021 12:36:08 -0000
@@ -395,16 +395,6 @@ usage(void)
        (void)fprintf(stderr,
            "usage: %s [-a arch] [-e entry] [-l loadaddr] [-n name] [-o os] "
            "[-t type] infile outfile\n", __progname);
-       (void)fprintf(stderr,
-           "arch is one of:");
-       for (mapptr = archmap; mapptr->arch; mapptr++)
-               (void)fprintf(stderr, " %s", mapptr->arch);
-       (void)fprintf(stderr, "\n");
-       (void)fprintf(stderr,
-           "os is one of:");
-       for (osmapptr = osmap; osmapptr->arch; osmapptr++)
-               (void)fprintf(stderr, " %s", osmapptr->arch);
-       (void)fprintf(stderr, "\n");
        
        exit(1);
 }