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

beacon_node/beacon_chain/src/eth1_chain.rs

@@ -685,7 +685,7 @@ mod test {
     fn get_eth1_data(i: u64) -> Eth1Data {
         Eth1Data {
             block_hash: Hash256::from_low_u64_be(i),
-            deposit_root: Hash256::from_low_u64_be(u64::max_value() - i),
+            deposit_root: Hash256::from_low_u64_be(u64::MAX - i),
             deposit_count: i,
         }
     }

beacon_node/beacon_chain/src/validator_monitor.rs

@@ -2068,7 +2068,7 @@ pub fn timestamp_now() -> Duration {
 }
 
 fn u64_to_i64(n: impl Into<u64>) -> i64 {
-    i64::try_from(n.into()).unwrap_or(i64::max_value())
+    i64::try_from(n.into()).unwrap_or(i64::MAX)
 }
 
 /// Returns the delay between the start of `block.slot` and `seen_timestamp`.