The YamlObject class defines two private types, Container and
ListContainer. The format is an alias to std::vector<Value>, and is used
to store child elements. The latter hasn't been used since commit
38987e165c ("libcamera: yaml_parser: Preserve order of items in
dictionary").
To prepare for upcoming reworks that will use the name 'Container' as a
template parameter, rename Container to ValueContainer for clarity, and
drop the unused ListContainer type.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>