Update to TrigTauCaloRoiUpdater and TrigTauTrackRoiUpdater

This MR updates the TrigTauXXXXXRoiUpdater tools used by the Tau Trigger:

• Remove the RoI size updating in the TrigTauCaloRoiUpdate alg., using the native ViewCreatorFetchFromViewRoITool functionality instead. This was already done in the LRT chains, so now the procedure is unified. Tested with 2k ttbar events, same output +/- rounding in the monitoring hists.
• Remove the remaining TauJet key in the TrigTauTrackRoiUpdater, a remnant of the removed track-selecting BDT.
• Removed bare new calls.
• Code comments, overall cleanup, refactoring, etc...