add requirements.txt

app.py

@@ -1,9 +1,5 @@
 import gradio as gr
-
-from huggingface_hub import hf_hub_download
-from fastai.vision.all import *
-
-from fastbook import *
+from fastai.learner import load_learner
 
 def greet(name):
     return "Hello " + name + "!!"