This removes privkeys and addresses from function signatures.
This comes with a 11% performance improvement to the simulator,
as we no longer keep recomputing the pubkeys.
Once we move the transient store clearing to endblock, we can
further raise the size of make test_sim_gaia_fast
concretely, `make test_sim_gaia_fast` went from 16.8 seconds to 13.5 seconds on my system.
The intent of this is to allow for simulating things like slashing for not
voting on a governance proposal. To test this, you would queue all the validator votes
in future blocks, and keep track of which ones you didn't slash. Then you could add queue a
"check governance slashing operation" after the voting period is over.