why are there two methods in OfflineReader that can provide the same data?

so fitinf has no "outsourced" reconstruction keys. To work around this, I implemented get_reco_fit method to provide the fitinf data for a certain rec_stages. The reconstruction parameters keys were taken from km3net Data-Format repository.

However, now we can also do the same with the method get_reco_tracks if the key fitinf is provided to the method! The difference is that get_reco_tracks does not provide the reconstruction parameters keys ....

Some work is needed here to avoid this!