Remove extra import

Author: holtskinner

src/a2a/server/apps/jsonrpc/jsonrpc_app.py

@@ -16,7 +16,6 @@
 
 from a2a.auth.user import UnauthenticatedUser
 from a2a.auth.user import User as A2AUser
-from a2a.server.apps.jsonrpc.fastapi_import_helpers import FastAPI
 from a2a.server.context import ServerCallContext
 from a2a.server.request_handlers.jsonrpc_handler import JSONRPCHandler
 from a2a.server.request_handlers.request_handler import RequestHandler