Docs: Remove unused import (#1616)

docs/pages/getting-started/astro.md

@@ -65,7 +65,6 @@ It's a bit verbose, but it just reads the session cookie, validates it, and sets
 ```ts
 // src/middleware.ts
 import { lucia } from "./auth";
-import { verifyRequestOrigin } from "lucia";
 import { defineMiddleware } from "astro:middleware";
 
 export const onRequest = defineMiddleware(async (context, next) => {