remove unused imports

cashu/mint/app.py

@@ -1,21 +1,15 @@
-import asyncio
 import logging
 import sys
 
-from fastapi import FastAPI, Request
+from fastapi import FastAPI
 from loguru import logger
 
 from cashu.core.settings import DEBUG, VERSION
-from cashu.lightning import WALLET
-from cashu.mint.migrations import m001_initial
 
 from starlette_context.middleware import RawContextMiddleware
-from starlette_context import context
 from starlette.middleware import Middleware
-from starlette.requests import Request as StarletteRequest
 
 
-from . import ledger
 from .router import router
 from .startup import load_ledger
 
@@ -59,9 +53,6 @@ def create_app(config_object="core.settings") -> FastAPI:
         Middleware(
             RawContextMiddleware,
         ),
-        Middleware(
-            RawContextMiddleware,
-        ),
     ]
 
     app = FastAPI(