card: clippy oh clippy, clippy my beloved.

src/card/default.rs

@@ -1,17 +1,5 @@
 use crate::card::{Card, PlayingCard, Rank, Suit};
 
-impl Default for Rank {
-    fn default() -> Self {
-        Self::Three
-    }
-}
-
-impl Default for Suit {
-    fn default() -> Self {
-        Self::Diamond
-    }
-}
-
 impl Default for PlayingCard {
     fn default() -> Self {
         Self::new(0, Rank::default(), Suit::default())

src/card/mod.rs

@@ -8,8 +8,9 @@ mod ord;
 #[cfg(test)]
 mod tests;
 
-#[derive(PartialEq, Eq, PartialOrd, Ord, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, PartialOrd, Ord, Default, Debug, Copy, Clone)]
 pub enum Rank {
+    #[default]
     Three = 0,
     Four,
     Five,
@@ -25,8 +26,9 @@ pub enum Rank {
     Two,
 }
 
-#[derive(PartialEq, Eq, PartialOrd, Ord, Debug, Copy, Clone)]
+#[derive(PartialEq, Eq, PartialOrd, Ord, Default, Debug, Copy, Clone)]
 pub enum Suit {
+    #[default]
     Diamond = 0,
     Club,
     Heart,