Remove the message about the migration

Author: dgarros

README.md

@@ -1,8 +1,4 @@
 
-> ⚠️ **Warning**
-> This repository is still a WORK IN PROGRESS. Soon it will be the new home of the Python SDK for Infrahub but for now the project still lives in the main repository
-</br>
-
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 ![Infrahub Logo](https://assets-global.website-files.com/657aff4a26dd8afbab24944b/657b0e0678f7fd35ce130776_Logo%20INFRAHUB.svg)
 <!-- markdownlint-restore -->