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

crypto/eth2_key_derivation/tests/tests.rs

@@ -22,7 +22,7 @@ fn deterministic() {
 fn children_deterministic() {
     let master = DerivedKey::from_seed(&[42]).unwrap();
     assert_eq!(
-        master.child(u32::max_value()).secret(),
-        master.child(u32::max_value()).secret(),
+        master.child(u32::MAX).secret(),
+        master.child(u32::MAX).secret(),
     )
 }