[four-in-a-row] Remove unused function

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 8e93a7b9dc94101a410687b19e73676af762605a
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Mon Feb 4 21:37:02 2019 -0600

    Remove unused function

 src/scorebox.vala | 6 ------
 1 file changed, 6 deletions(-)
---
diff --git a/src/scorebox.vala b/src/scorebox.vala
index a367e4a..b623be5 100644
--- a/src/scorebox.vala
+++ b/src/scorebox.vala
@@ -109,12 +109,6 @@ class Scorebox : Gtk.Dialog {
 
     }
 
-    public void reset() {
-        application.score[PlayerID.PLAYER1] = 0;
-        application.score[PlayerID.PLAYER2] = 0;
-        application.score[PlayerID.NOBODY] = 0;
-    }
-
     public override bool delete_event(Gdk.EventAny event) {
         hide();
         return true;