chore: remove no longer needed code

bench: 1583604

Author: DeveloperPaul123

src/bin/hce-tuner/parameters.rs

@@ -12,6 +12,7 @@ use crate::{
     math, offsets::PARAMETER_COUNT, tuner_score::TuningScore, tuning_position::TuningPosition,
 };
 
+/// Set of parameters that serve as input for tuning.
 pub struct Parameters([TuningScore; PARAMETER_COUNT]);
 
 #[allow(dead_code)]
@@ -28,9 +29,6 @@ fn piece_value(piece: Piece) -> f64 {
 }
 
 impl Parameters {
-    pub(crate) fn len(&self) -> usize {
-        self.0.len()
-    }
     pub(crate) fn as_slice(&self) -> &[TuningScore] {
         &self.0
     }

src/bin/hce-tuner/tuner.rs

@@ -113,7 +113,6 @@ impl<'a> Tuner<'a> {
             let left = self.mean_square_error(k - delta);
             dev = (right - left) / (100000. * delta);
             k -= dev;
-            println!("dev {:.5}", dev.abs());
             if k <= 0.0 {
                 println!("k {k:.4} decr {left:.5} incr {right:.5}");
             }