Remove redundant Card record code

Java Records automatically acquire an implementation of equals and
hashCode that accounts for their components. They also have read
accessors for their components (card.suit() to get the suit).

10_Blackjack/java/src/Player.java

@@ -105,7 +105,7 @@ public class Player {
             // Can't split twice
             return false;
         } else {
-            boolean isPair = this.hand.get(0).getValue() == this.hand.get(1).getValue();
+            boolean isPair = this.hand.get(0).value() == this.hand.get(1).value();
             return isPair;
         }
     }