Finish integrating command registry

autogpt/commands/image_gen.py

@@ -1,12 +1,12 @@
 """ Image Generation Module for AutoGPT."""
 import io
-import os.path
 import uuid
 from base64 import b64decode
 
 import openai
 import requests
 from PIL import Image
+
 from autogpt.commands.command import command
 from autogpt.config import Config
 from autogpt.workspace import path_in_workspace