Unused function ivas_sba_get_order()

The function ivas_sba_get_order() is used only as

    else if ( sba_order < 0 )
    {
        sba_order = ivas_sba_get_order( nb_channels, sba_planar );
    }

but it is never entered - see https://ivas-codec-pc.3gpp.org/ivas-codec/coverage/lib_com/ivas_sba_config.c.gcov.html. It looks to me that sba_order cannot be negative and the function is thus unused and should be cleaned out.