Revert coordinator/tributary to fd4f247917

\#560 is causing notable CI failures, with its logs including slashes at 10x
the prior rate.

coordinator/tributary/tendermint/src/round.rs

@@ -57,7 +57,6 @@ impl<N: Network> RoundData<N> {
 
   // Poll all set timeouts, returning the Step whose timeout has just expired
   pub(crate) async fn timeout_future(&self) -> Step {
-    /*
     let now = Instant::now();
     log::trace!(
       target: "tendermint",
@@ -65,7 +64,6 @@ impl<N: Network> RoundData<N> {
       self.step,
       self.timeouts.iter().map(|(k, v)| (k, v.duration_since(now))).collect::<HashMap<_, _>>()
     );
-    */
 
     let timeout_future = |step| {
       let timeout = self.timeouts.get(&step).copied();