fix issues in py

app/main.py

@@ -9,23 +9,15 @@ from dotenv import load_dotenv
 from fastapi.middleware.cors import CORSMiddleware
 from uuid import uuid4
 
-from typing import Optional
 import joblib
 import librosa
 import numpy as np
 
 import pandas as pd 
 import numpy as np
-import matplotlib.pylab as plt
-import seaborn as sns
-
-from glob import glob
 import librosa.display
-import IPython.display as ipd
 import soundfile as sf
 
-from itertools import cycle
-
 
 load_dotenv()