Make some cosmetic changes

exhaustive_search.py

@@ -1,6 +1,6 @@
 import time
 from itertools import permutations
-from typing import Callable, Tuple
+from typing import Tuple
 
 import numpy.typing as npt
 
@@ -53,7 +53,7 @@ if __name__ == "__main__":
         print(f"time to find solution: {time_elapsed_ms:>12.6f}ms\n")
 
 
-""" Running example
+"""Running example
 
 oblig1 on  main [?] via 🐍 v3.12.6 took 7s
 ❯ python exhaustive_search.py