chore(clients): remove mention of GA (#3452)

Author: millotp

clients/algoliasearch-client-csharp/README.md

@@ -31,10 +31,6 @@
 * Injectable HTTP client.
 * Retry strategy & Helpers.
 
-**Migration note for v7.x**
-
-> In July 2024, we released v7 of our .NET client. If you are using version 6.x of the client, read the [migration guide to version 7.x](https://www.algolia.com/doc/api-client/getting-started/upgrade-guides/csharp/).
-
 **Migration note from v5.x to v6.x**
 
 > In January 2019, we released v6 of our .NET client. If you are using version 5.x of the client, read the [migration guide to version 6.x](https://www.algolia.com/doc/api-client/getting-started/upgrade-guides/csharp/).

clients/algoliasearch-client-java/README.md

@@ -27,11 +27,6 @@
 * Thread-safe clients
 * Typed requests and responses
 
-**Migration note from v3.x to v4.x**
->
-> In July 2024, we released the v4 of our Java client. If you are using version 2.x or 3.x of the client, read the [migration guide to version 4.x](https://www.algolia.com/doc/api-client/getting-started/upgrade-guides/java/).
-Version 3.x will **no longer** be under active development.
-
 ## 💡 Getting Started
 
 To get started, add the algoliasearch-client-java dependency to your project, either with [Maven](Maven):

clients/algoliasearch-client-javascript/README.md

@@ -23,10 +23,6 @@
   <a href="https://alg.li/support" target="_blank">Support</a>
 </p>
 
-**Migration note from v4.x to v5.x**
-
-> In July 2024, we released the v5 version of our JavaScript client. If you are using version 4.x of the client, read the [migration guide to version 5.x](https://api-clients-automation.netlify.app/docs/clients/migration-guides/). Version 4.x will **no longer** be under active development.
-
 ## ✨ Features
 
 - Thin & **minimal low-level HTTP client** to interact with Algolia's API