docs: remove requirement of using Copilot Chat in Insider (#71)

README.md

@@ -38,7 +38,6 @@ Generate API SDK clients for your favorite language including JavaScript, TypeSc
 
 ## Notice/Known Issues
 
-- VS Code Insiders (version after 2024-01-19) is required to use the `@apicenter` agent with GitHub Copilot Chat.
 - Contents in VS Code workspace are not sent to GitHub Copilot.
 - When the content of single spec is very large, the `@apicenter` agent may fail as the token limit of GitHub Copilot Chat is exceeded. This is a temporary limitation our team is working to remove.
 - When the number of selected Azure Subscription is larger then 10, `@apicenter` agent may fail as it reaches call limit of Azure REST APIs.