qemu-options: Remove the deprecated -async-teardown option

It's been marked as deprecated since QEMU 8.1 (and was only available
since QEMU 8.0 anyway), so it should be fine to remove this now.

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240118103759.130748-4-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 files changed