clean: removing useless handle_file

src/controllers/render_controller.py

 import os
-from gradio_client import Client, handle_file
+from gradio_client import Client
 
 class RenderController:
     def get_render(self, hf_token='', text="Hello!!",

src/controllers/suggest_controller.py

 import os
-from gradio_client import Client, handle_file
+from gradio_client import Client
 
 class SuggestController:
     def get_suggest(self, hf_token='', message='', system_prompt='', temperature=.0,