doc and remove unused file dans method

src/GomokuGame.java

@@ -1,10 +1,10 @@
 
-import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Random;
+import java.io.BufferedReader;
 
 public class GomokuGame {
 
@@ -129,7 +129,6 @@ public class GomokuGame {
         this.colorP1 = colorPlayer1;
         currentPlayer = this.player1.color == Color.WHITE ? this.player1 : this.player2;
         this.currentPlayerInt = this.player1.color == Color.WHITE ? 1 : 2;
-        this.renderer = new SwingRenderer();
 
     }