docs: update roadmap after v3 release

pages/docs/roadmap.mdx

@@ -77,7 +77,6 @@ Subscribe to our mailing list to get occasional email updates about new features
 
 ## 🚧 In progress
 
-- Langfuse v3.0: preparing Langfuse for the next level of scale using an OLAP database, a queue and another container. Parts of it are already available in Langfuse Cloud and once migration is complete, self-hosting will be upgraded as well. Learn more in this [GitHub Discussion](https://github.com/orgs/langfuse/discussions/1902).
 - Export traces and sessions from Langfuse dashboard (CSV, JSON)
 - Improved tables across the Langfuse UI to display all relevant information and be more user-friendly.
 - Move to SDK references generated from docstrings to improve the developer experience (Intellisense) and reduce the risk of errors.