Using course tools>>Announcements
To remove an announcement:
Do one of the following:
Click the course name on the My CourseCompass page, click Control Panel, then click Announcements under Course Tools.
In the Announcements area on the My CourseCompass page, click Manage to the right of any announcement.
Click Remove next to the announcement you want to delete.
Click OK to confirm the deletion.
Caution: If you delete an announcement by mistake, you must create it again from scratch.