Update app.py

app.py

@@ -19,10 +19,8 @@ from components.invoicepayload import InvoicePayload
 
 import uuid
 from fastapi.middleware.cors import CORSMiddleware
-from x402.types import  PaymentRequirements,PaymentPayload
-from x402.types import x402PaymentRequiredResponse
 from x402.encoding import safe_base64_decode
-from x402.common import process_price_to_atomic_amount, x402_VERSION
+
 import json
 import base64
 import httpx