orbital parameters written to med.log every timestep in HIST runs

In recent BLTHIST experiments of @cecilehannay, the orbital parameters are getting written to med.log every timestep, i.e., 48 times per day. In my opinion, it's a fair amount of clutter. Can the frequency at which these messages are written out be reduced?

It looks like this might be specific to `orb_mode = variable_year`. I don't see this output every timestep in BLT1850 experiments.