How do I delete a forum post?
Users with appropriate permissions can delete posts in Discussions.
By default, those with Contributor permissions (e.g., students in course sites and members in collaboration sites) can delete their own posts. For more information on permissions, see the steps for viewing and editing permissions in the article about creating a forum.
Choose the topic that contains the post to delete.

Select the title of a topic to access the topic.
Note: Topics are indented underneath the forum where they are located.
Select the conversation.

Select the title of the first post in the conversation that contains the post to be deleted.
Select Delete Message.

Select Delete Message by the post to remove.
Note: You must have appropriate permissions to delete the post. If you do not have permission to do so, the Delete Message link will not appear.