[w3c/browser-payment-api] Remove unnecessary clause about validation. (#213)

The spec doesn't define what it means to validate the currency string so it is impossible to know what NOT to do. Additionally, specs should describe what _should_ be done and not what should not be done in order to achieve the desired outcome.

Closes #175.
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/browser-payment-api/pull/213

-- Commit Summary --

  * Remove unnecessary clause about validation.

-- File Changes --

    M index.html (3)

-- Patch Links --

https://github.com/w3c/browser-payment-api/pull/213.patch
https://github.com/w3c/browser-payment-api/pull/213.diff

---
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/browser-payment-api/pull/213