Update OpenID4VP to v1 in README

This commit updates the README.md to reflect the change in the OpenID4VP version used by the app from draft 24 to v1. It also removes the mention of presentation exchange v2.0.

Author: stzouvaras

README.md

@@ -35,7 +35,7 @@ The EUDIW project provides, through this repository, an Android app. Please refe
 
 The app consumes the SDK called EUDIW Wallet core [Wallet core](https://github.com/eu-digital-identity-wallet/eudi-lib-android-wallet-core) and a list of available libraries to facilitate remote presentation, proximity, and issuing test/demo functionality following the specification of the [ARF](https://github.com/eu-digital-identity-wallet/eudi-doc-architecture-and-reference-framework), including:
 
-- OpenID4VP - draft 24 (remote presentation), presentation exchange v2.0, DCQL
+- OpenID4VP - v1 (remote presentation), DCQL
 
 - ISO18013-5 (proximity presentation),