message: Remove unused FPS counter object
diff: #pragma once
  #include "NAS2D/Signal.h"
  -#include "NAS2D/FpsCounter.h"
  #include "MapViewStateHelper.h"
  #include "MainReportsUiState.h"
  @@ -194,8 +193,6 @@ private:
  private:
  - NAS2D::FpsCounter mFps; /**< Main FPS Counter. */
  -
  TileMap* mTileMap = nullptr;
  NAS2D::Image mBackground; /**< Background image drawn behind the tile map. */
  