chore: Remove the link to "Next mobile app" (#4792)

README.md

@@ -21,10 +21,6 @@
 - We strive to timebox the core of the meeting (decision making) to 30 minutes, with an optional free discussion/live debugging afterwards.
 - We take comprehensive notes in the Weekly Agenda of agenda item discussions and of decisions taken.
 
-## 🆕 The future of the app
-
-Starting this April, we invite all users and contributors to build a vision for the app. All information are detailed on this [blog post](https://blog.openfoodfacts.org/en/news/towards-1-million-users-and-beyond-for-open-food-facts-mobile-app).
-
 ## User interface
 
 - [![Figma](https://img.shields.io/badge/figma-%23F24E1E.svg?logo=figma&logoColor=white) Mockups on the current app and future plans to discuss](https://www.figma.com/file/nFMjewFAOa8c4ahtob7CAB/Mobile-App-Design-(Quentin)?node-id=0%3A1&t=SrBuT7gBdhapUerx-0)