Rookie mistake. In the default Nintex Task List I wanted to hide some of the task fields. I did this and reordered the fields. Unfortunately, while in the content type settings page, I did not read the "This content type is for use by Nintex Workflow for Office 365 and it should not be altered." in time.
Now when the approver goes to open the task, they no longer see the nice "approved" or "rejected" buttons down by the "save" and "cancel" buttons. How can I restore the content types back to default?