Remove grade display from news content

Summary

News content currently displays a grade that is intended as a technical quality grading, not for user visibility. This grade should not be shown to users.

Steps to Reproduce

1. Navigate to any news item on the platform.
2. Observe the grade displayed alongside the news content.

Expected Behaviour

The grade should not be visible to users anywhere in the news content.

Actual Behaviour

The grade is shown in the news content, which is a technical quality grading not meant for user consumption.

Environment

Not provided.

Reported by retoor via DevPlace.