Deleting a field using the Field UI only requires that the field is not being reused across multiple content types and that the field has no data stored in it. Since this is a new instance of our Post content type, we can delete the Body field by selecting Delete from the drop-down button next to the field name:

Once we choose to delete a field, we will be prompted by Drupal, asking us to confirm our selection. We can complete the process by clicking on the Delete button once more.

Now that we have only the Title field attached to our Post content type, we will need to add some new fields to capture the data that we want to display when users view our blog.