Restored 2016MC15C MMC CalibSet for validation
Follow up to !65640 (merged)
Restore 2016MC15C tuning as 2019 tuning seems to have some unexpected effect in bbtautau analysis (see slide 4 https://indico.cern.ch/event/1397000/contributions/5871927/attachments/2825319/4935154/20240322_HbbHtautau_FrameworkMeeting.pdf )
Will be used for validation purposes