Remove Display impl, better to use Debug

src/player.rs

@@ -1,5 +1,3 @@
-use std::fmt;
-
 use crate::{Gaussian, BETA, GAMMA, N_INF};
 
 #[derive(Clone, Copy, Debug)]
@@ -35,13 +33,3 @@ impl Default for Player {
         Player::new(Gaussian::default(), BETA, GAMMA, N_INF)
     }
 }
-
-impl fmt::Display for Player {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(
-            f,
-            "Player({}, beta={:.3}, gamma={:.3})",
-            self.prior, self.beta, self.gamma
-        )
-    }
-}