This parameter was developed during similar window when the deduplication
work was done in commit 2220c2b9ef ("qapi/migration: Don't document
MigrationParameter"), hence it was overlooked.
Remove the leftover parameter. After all, MigrationParameter is already in
the exception list of the doc sanity checker.
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Link: https://lore.kernel.org/r/20260528201236.359452-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>