Fix warnings in AFP_Raw2DigiTool
Degrades warnings in AFP_Raw2DigiTool
about unrecognised hptdcChannel to debug if the data are from Run2 and the channels are 1 or 4. This is known problem of Run2 data. However, similar problem might happen in Run3 and that would be warning-worthy.
Also makes the tool private.
Closes ATLASRECTS-6975
Edited by Petr Balek