With BWTest Test removed -> Do we even need `hackily_change_dataPackages`

The following discussion from !35 (merged) should be addressed:

• @lugrazet started a discussion: (+1 comment)

  Do we even need hackily_change_dataPackages once !34 (merged) goes in?

Yes :

We don't want the possiblity of generating a TCK based on ParamFiles or some such.
Hence we fix the dataPackages to just be PRConfig