text: Title: Remove office hours announcements
  Body: ### Summary
  
  Remove this:
  
  <img width="817" alt="Image" src="https://github.com/user-attachments/assets/ce9c4e1b-3963-40e1-bd1d-70c77f05a443" />
  
  ### Where to change
  
  ```diff
  diff --git a/README.md b/README.md
  index 6d2af8a80e..8d42c95990 100644
  --- a/README.md
  +++ b/README.md
  @@ -1,13 +1,5 @@
   # MLflow: A Machine Learning Lifecycle Platform
   
  -### 📢 Announcements 📢
  -
  -### [Join us at the upcoming office hours (Feb 5, 2025 5:00 PM PST / 8:00 PM EST)](https://lu.ma/gfcdbuz4)
  -
  -To view all upcoming MLflow community events, check out [lu.ma/mlflow](https://lu.ma/mlflow)
  -
  ----
  -
   [![Latest Docs](https://img.shields.io/badge/docs-latest-success.svg?style=for-the-badge)](https://mlflow.org/docs/latest/index.html)
   [![Apache 2 License](https://img.shields.io/badge/license-Apache%202-brightgreen.svg?style=for-the-badge&logo=apache)](https://github.com/mlflow/mlflow/blob/master/LICENSE.txt)
   [![Total Downloads](https://img.shields.io/pypi/dw/mlflow?style=for-the-badge&logo=pypi&logoColor=white)](https://pepy.tech/project/mlflow)
  ```
  
  ### Notes
  
  - Make sure to open a PR from a **non-master** branch.
  - Sign off the commit using the `-s` flag when making a commit:
  
    ```sh
    git commit -s -m "..."
             # ^^ make sure to use this
    ```
  
  - Include `#{issue_number}` (e.g. `#123`) in the PR description when opening a PR.
  