Downgrading WARNING to DEBUG in TauElectronVetoVariables
The tool TauElectronVetoVariables has been producing long-standing and long-ignored WARNING messages in the reconstruction, which (along with many others) are obfuscating the log files such that we can't use WARNING messages for their intended purpose. There hasn't been much response on the JIRA so now I make the MR directly in the hope of provoking a response. Since there isn't much activity on this, I don't think this can be a very serious warning, in which case downgrading to DEBUG would anyway be reasonable.