Click the Options Menu, Announcements.
The Section Announcements Screen will appear.
Use the Section Slider to select the Section from which you want to delete the announcement. The selected Section is highlighted by a black box.
Select the Announcement you want to delete from the Section Announcement Grid. The selected announcement is highlighted in blue.
Click 
next
to the Section Announcement Grid.
A confirmation screen will appear:
Click Yes to delete the Announcement.