tauRecTools: fix spurious warnings
Hello,
As reported by @pfalke , the CombinedP4FromRecoTaus tool can issue spurious warnings as a consequence of !48449 (merged) . The method returning the calo-only tau energy resolution (GetCaloResolution) is now superseded by the method returning the MVA tau energy resolution (GetMvaEnergyResolution), when used for the MET significance calculation. So a warning was put in GetCaloResolution to make sure it would not be called.
I forgot that GetCaloResolution is internally used for other purposes in R21.2, and in that case the warnings are spurious.
So I am moving GetCaloResolution as a private method, and removed the warning.
Cheers, Bertrand