Updated various typoes and removed some unneeded code

Headers/Problem15.hpp

@@ -42,7 +42,7 @@ private:
 	//Functions
 	//This function acts as a handler for moving the position on the grid and counting the distance
 	//It moves right first, then down
-	void move(int currentX, int currentY, uint64_t& numOfRoutes);
+	void move(int currentX, int currentY);
 public:
 	//Constructor
 	Problem15();