[gnome-chess] Remove unused method ChessGame.abandon()

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 4318ada8c9e25bbe0fc9cee41ab1e0c660fea6fe
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Jan 7 13:48:49 2014 -0600

    Remove unused method ChessGame.abandon()

 src/chess-game.vala |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)
---
diff --git a/src/chess-game.vala b/src/chess-game.vala
index a3e0594..423b244 100644
--- a/src/chess-game.vala
+++ b/src/chess-game.vala
@@ -1488,13 +1488,6 @@ public class ChessGame
         else
             stop (ChessResult.WHITE_WON, ChessRule.TIMEOUT);
     }
-
-    public void abandon ()
-    {
-        if (!is_started)
-            return;
-        stop (ChessResult.DRAW, ChessRule.ABANDONMENT);
-    }
     
     public ChessPiece? get_piece (int rank, int file, int move_number = -1)
     {