The procedure of disabling passwords from PDF documents is simple. First, open the PDF document by entering the password. Then click on File Tab and select Print Option. Here, you need to select on select Microsoft Print to PDF option against the printer drop-down and click on print. Then you need to save the file to the desired location. Thus, you can disable passwords in a PDF encrypted document.
For complete details, read here: https://www.fincash.com/l/guidance/disable-passwords-pdf-encrypted-documents