Gradebook: Delete a Manual Grade Item

To remove Moodle activities
like Forums, Quizzes or Assignments you will need to set their grade type to None or delete them from the main course page/weekly view of your course.

Steps for doing that are not covered in this article.

Enter the Course you wish to rearrange the gradebook in.

Locate the Actions menu (gear icon), click the Gradebook Setup link.

Locate the Manual Grade item you want to remove.
(My Example is helpfully named Delete Me)

Click the Edit menu for the item

Select Delete.

Confirm your choice.

Repeat as desired.