Cleanup of STS parameters.

Related to https://redmine.cbm.gsi.de/issues/3323.

Removed hardcoded 2022 parameters from STS Unpacker setup classes. They don't seem to be needed any longer (superceded by YAML files).

Also modified the class CbmTaskUnpack(), which was the only place (to my knowledge) where they were referenced. Replaced this by a read from the corresponding YAML files (although I suspect no one except myself is using this task).