Removed unused import.

Signed-off-by: Gabriel Lindeblad <Gabriel.lindeblad@icloud.com>

Author: Glindeb

src/AES_Python/main.py

@@ -4,7 +4,6 @@
 be used in any other use case than educational and no security is guaranteed for data
 encrypted or decrypted using this tool.
 """
-import os
 
 # Imported libraries
 import numpy as np  # Used for arrays and mathematical operations.