fix: removed unused writeToCSV method

src/main/java/hepia/GameManager.java

 package hepia;
 
-import com.opencsv.CSVWriter;
-
 import java.io.*;
 import java.util.ArrayList;
 import java.util.List;
@@ -620,16 +618,6 @@ public class GameManager implements Serializable {
         game.restartGame();
     }
 
-    public void writeToCSV() throws IOException {
-        try (CSVWriter writer = new CSVWriter(new FileWriter("gameState.csv"))) {
-            writer.writeNext(
-                    new String[] { this.decks.toString(), this.humanPlayers.toString(), this.aiPlayers.toString(),
-                            this.basicAi.toString(), this.advancedAi.toString(), this.croupier.toString(),
-                            this.players.toString(), this.bustedPlayers.toString(), this.blackJackHands.toString(),
-                            this.bustedHands.toString(), this.currentGame.toString(), this.game.toString() });
-        }
-    }
-
     public void backupCurrentGame() throws IOException {
         File dir = new File("gameBackups");
         if (!dir.exists()) {