message: Remove non-vectorized `TileMap::isVisibleTile`
diff: @@ -38,7 +38,6 @@ public:
  Tile* getVisibleTile(NAS2D::Point<int> position, int level);
  Tile* getVisibleTile() { return getVisibleTile(tileMouseHover(), mCurrentDepth); }
  - bool isVisibleTile(int x, int y, int z) const { return isVisibleTile(NAS2D::Point<int>{x, y}, z); }
  bool isVisibleTile(NAS2D::Point<int> position, int z) const;
  bool isVisibleTile(NAS2D::Point<int> position) const { return isVisibleTile(position, mCurrentDepth); }
  bool isVisibleTile(const Tile& t) { return isVisibleTile(t.position(), t.depth()); }
  