docs(billing): remove stale threshold billing section (#2612)

The "Billing thresholds & Invoicing" section described the old
post-paid threshold model (charged each time accrued usage crossed
a $100 threshold). This contradicts the prepaid-credits +
automatic-recharge model already documented in the Support FAQ.
Monthly invoice timing is already covered earlier in the file.


Claude-Session: https://claude.ai/code/session_01GmkEbXiHr16TQM8o9TSna9

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: zaid-alhadad

docs/hub/billing.md

@@ -80,31 +80,6 @@ You can add a credit card to your account from your billing settings.
 	<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/hub/billing/payment-method-dark.png"/>
 </div>
 
-
-### Billing thresholds & Invoicing
-
-When using credit cards as a payment method, you'll be billed for the Hugging Face compute usage each time the accrued usage goes above a billing threshold for your user or organization.
-
-On the 1st of every month, Hugging Face edits an invoice for usage accrued during the prior month. Any usage that has yet to be charged will be charged at that time.
-
-For example, if your billing threshold is set at $100.00, and you incur $254.00 of usage during a given month, your credit card will be charged a total of three times during the month:
-- Once for usage between $0 and $100: $100
-- Once for usage between $100 and $200: $100
-- Once at the end of the month for the remaining $54: $54  
-
-Note: this will be detailed in your monthly invoice.
-
-<div class="flex justify-center">
-	<img class="block" src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/hub/billing/explain-threshold.png "/>
-</div>
-
-You can view invoices and receipts for the last 3 months in your billing dashboard.
-
-<div class="flex justify-center">
-	<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/hub/billing/threshold-payments-light.png "/>
-	<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/hub/billing/threshold-payments-dark.png"/>
-</div>
-
 ## Cloud providers partnerships
 
 We partner with cloud providers like [AWS](https://huggingface.co/blog/aws-partnership), [Azure](https://huggingface.co/blog/hugging-face-endpoints-on-azure),