Rust 1.79 lints (#5927)

* max_value -> MAX

* remove unnecesary closures

* a couple more max_value -> MAX

* a couple more max_value -> MAX

* Revert "a couple more max_value -> MAX"

This reverts commit 807fe7cae9.

* unused spec field -> phantom data

* ignore some dead code warnings

* update kurtosis repo location

consensus/types/benches/benches.rs

@@ -36,8 +36,8 @@ fn get_state<E: EthSpec>(validator_count: usize) -> BeaconState<E> {
                 slashed: false,
                 activation_eligibility_epoch: Epoch::new(0),
                 activation_epoch: Epoch::new(0),
-                exit_epoch: Epoch::from(u64::max_value()),
-                withdrawable_epoch: Epoch::from(u64::max_value()),
+                exit_epoch: Epoch::from(u64::MAX),
+                withdrawable_epoch: Epoch::from(u64::MAX),
             })
             .collect(),
     )