chore: remove unused polyfills module

documentation/docs/10-getting-started/40-web-standards.md

@@ -4,9 +4,7 @@ title: Web standards
 
 Throughout this documentation, you'll see references to the standard [Web APIs](https://developer.mozilla.org/en-US/docs/Web/API) that SvelteKit builds on top of. Rather than reinventing the wheel, we _use the platform_, which means your existing web development skills are applicable to SvelteKit. Conversely, time spent learning SvelteKit will help you be a better web developer elsewhere.
 
-These APIs are available in all modern browsers and in many non-browser environments like Cloudflare Workers, Deno, and Vercel Functions. During development, and in [adapters](adapters) for Node-based environments (including AWS Lambda), they're made available via polyfills where necessary (for now, that is — Node is rapidly adding support for more web standards).
-
-In particular, you'll get comfortable with the following:
+These APIs are available in all modern browsers and in many non-browser environments like Cloudflare Workers, Deno, and Vercel Functions. In particular, you'll get comfortable with the following:
 
 ## Fetch APIs