Step 1: Go to Workspace.

Step 2: Select the appropriate Grade.

Step 3: Click on the Assigned tab.

Step 4: Locate the assignment from which you want to remove the student and click on More.

Step 5: Click the Un-Assign button from the options.

Step 6: Choose your Class from the drop-down menu.

Step 7: Select the checkbox next to the student(s) you want to un-assign the assignment from.

Step 8: Then click 'Un-Assign'.