updating DIRECTORY.md

Author: github-actions

DIRECTORY.md

@@ -58,7 +58,6 @@
   * [Edit Distance](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/edit_distance.cpp)
   * [Egg Dropping Puzzle](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/egg_dropping_puzzle.cpp)
   * [Fibonacci Bottom Up](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/fibonacci_bottom_up.cpp)
-  * [Fibonacci Top Down](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/fibonacci_top_down.cpp)
   * [Floyd Warshall](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/floyd_warshall.cpp)
   * [Kadane](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/kadane.cpp)
   * [Longest Common String](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/dynamic_programming/longest_common_string.cpp)