message: Remove now unused overload of TileMap::getVisibleTile
diff: @@ -47,7 +47,6 @@ public:
  Tile& getTile(NAS2D::Point<int> position) { return getTile({position, mCurrentDepth}); }
  Tile* getVisibleTile(const MapCoordinate& position);
  - Tile* getVisibleTile(NAS2D::Point<int> position, int level) { return getVisibleTile({position, level}); }
  Tile* getVisibleTile() { return getVisibleTile({tileMouseHover(), mCurrentDepth}); }
  bool isVisibleTile(const MapCoordinate& position) const;
  