How to remove Rectangle using position?

[lephuhai]

How can I remove rectangle on the page?

I got position value of Rectangle every page like this:

[
  PDFReal { value: 61.332 },
  PDFReal { value: 4.5 },
  PDFReal { value: 122.586 },
  PDFReal { value: 16.2 }
]

Thank you so much for your help.