To delete your postal indicia:

1. Click on your name in the upper-right of the page.
   
   
2. Choose Business Info in the resulting menu.
   
   
   
   
3. Hover your mouse cursor over the indicia image, then click the trashcan icon that appears over the lower part of the image.
   
   
   
   
4. Click the Save button at the bottom-right side of the screen.
   
   

Note: You may also want to delete your postal indicia in order to upload a new one if you are unable to crop the existing one.