module: Drop unused signature types

Only PKCS#7 signatures are used today.

Remove the unused enum values. As this enum is used in on-disk data,
preserve the numeric value.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Petr Pavlu <petr.pavlu@suse.com>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Thomas Weißschuh 2026-03-05 10:31:38 +01:00 • committed by Sami Tolvanen
commit 8988913aac