Hence my link to How to watch and look through logging.
The purpose of the events.log is to log out everything that gets posted to the event bus. So it would be a little counter to the whole purpose of that log file to disable some events. It would give an incomplete picture. Personally, I would either completely turn off events.log rather than prevent it from logging out some events in the first place.
I’ll direct you to the How to watch and look through logging above as well for ways to filter out those lines as you look through the files.
Finally, if you insist, openHAB - Filtering event logs will show how to set regular expression filters to prevent the logger from logging out some events.