To delete content from your Content area on D2L, please follow the tutorial steps below.
Click the Content link on your course navigation bar.
Decide what content topic you would like to delete. In this example, assignment 1 is going to be deleted.
In the drop-down context menu of the content topic you would like to remove, click Delete Topic.
In the last step, you will need to choose whether to remove the content from the content view only or permanently delete it from the course.
Once you have decided, click Delete.