remove curve 25519

Author: panva

README.md

@@ -1,11 +1,12 @@
 # Secure Curves in the Web Cryptography API
 
-This repository contains a proposal to add support for [Curve25519 and
-Curve448](https://tools.ietf.org/html/rfc7748) in the Web Cryptography API.
+This repository contains a proposal to add support for [Curve448](https://tools.ietf.org/html/rfc7748) in the Web Cryptography API.
 
 There is an [explainer](./explainer.md) and a [draft specification](https://WICG.github.io/webcrypto-secure-curves/).
 
 See the [implementation status](https://github.com/WICG/webcrypto-secure-curves/issues/20).
 
 Acknowledgement: this proposal was based on [a previous proposal by Qingsi Wang
 to include Curve25519 in WebCrypto](https://github.com/tQsW/webcrypto-curve25519).
+
+Note: Curve25519 has already been added to [Web Cryptography](https://w3c.github.io/webcrypto/)