[Content Improvement]

**Link to the notebook**
[Add the link to the notebook.](https://github.com/aws/amazon-sagemaker-examples/blob/main/introduction_to_applying_machine_learning/xgboost_customer_churn/xgboost_customer_churn_outputs.ipynb)

**What aspects of the notebook can be improved?**
Remove all the useless loading status messages. These make the document unusable.

**What are your suggestions?**
Clean up the notebook and remove the status messages as they add no value.