Question:
Does the Win2PDF installer have an uninstall command line option?

Answer:
The Win2PDF installer does not have an uninstall option, but there is a separate uninstaller named unins000.exe located at one of the following locations depending on whether the version of Windows is 32 bit or 64 bit:
C:\Windows\SysWOW64\spool\drivers\x64\3\Win2PDF
C:\Windows\System32\spool\drivers\w32x86\3\Win2PDF

The "/SILENT", "/VERYSILENT", and "/NORESTART" command line options work with the uninstaller:
https://www.win2pdf.com/doc/deploy-win2pdf.html