remove frameCount for now

Program.cs

@@ -192,7 +192,6 @@ public class Game : GameWindow {
   static int thumbnailHeight = 100;
   static int thumbnailWidth = (int) 1.0 * thumbnailHeight * activeCamera.Resolution.X / activeCamera.Resolution.Y;
 
-  int frameCount;
   int windowWidth;
   int windowHeight;
   float[] vertices = {
@@ -289,7 +288,6 @@ public class Game : GameWindow {
 
   protected override void OnRenderFrame(FrameEventArgs e) {
     base.OnRenderFrame(e);
-    frameCount++;
     GL.Clear(ClearBufferMask.ColorBufferBit);
 
     int borderWidth = 2;