chore(docs): temporarily remove custom readme code

README.md

@@ -159,29 +159,6 @@ card = client.cards.create(
 print(card.product_id)
 ```
 
-## Webhook Verification
-
-We provide helper methods for verifying that a webhook request came from Lithic, and not a malicious third party.
-
-You can use `lithic.webhooks.verify_signature(body: string, headers, secret?) -> None` or `lithic.webhooks.unwrap(body: string, headers, secret?) -> Payload`,
-both of which will raise an error if the signature is invalid.
-
-Note that the "body" parameter must be the raw JSON string sent from the server (do not parse it first).
-The `.unwrap()` method can parse this JSON for you into a `Payload` object.
-
-For example, in [FastAPI](https://fastapi.tiangolo.com/):
-
-```py
-@app.post('/my-webhook-handler')
-async def handler(request: Request):
-    body = await request.body()
-    secret = os.environ['LITHIC_WEBHOOK_SECRET']  # env var used by default; explicit here.
-    payload = client.webhooks.unwrap(body, request.headers, secret)
-    print(payload)
-
-    return {'ok': True}
-```
-
 ## Handling errors
 
 When the library is unable to connect to the API (for example, due to network connection problems or a timeout), a subclass of `lithic.APIConnectionError` is raised.