get_maintainer: stop reporting subsystem status as maintainer role

After introducing the --substatus option, we can stop adjusting the
reported maintainer role by the subsystem's status.

For compatibility with the --git-chief-penguins option, keep the "chief
penguin" role.

Link: https://lkml.kernel.org/r/20250203-b4-get_maintainer-v2-2-83ba008b491f@suse.cz


Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Tested-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Joe Perches <joe@perches.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>