I'm not sure what you mean by "silently" but...
Depends on which operating system you're using.
In Windows, uninstall the program by selecting the option from Programs and Features.
On a Mac, select the Uninstall program from the Applications/Premiere Elements 12 directory.
What I mean is to uninstall it with a single script from the command line
For example install this silently I can use this:
Setup.exe /UL1033 /V"SERIALNUMBER=xxxx-xxxx-xxxx-xxxx-xxxx-xxxx COUNTRY=44"
and it works fine.
To remove the package I want to use something similar to this, with some other switches
“C:\Program Files (x86)\Common Files\Adobe\OOBE\PDApp\DWA\Setup.exe” -–mode=silent –-acton=uninstall -–deploymentFile=”%TEMP%\remove.xml”
This above script only works partly as you still have to push buttons to go forward. I want to make it totally silent so it can deployed to corporate environment with deployment tools like SMS or SCCM.
You'll likely need to contact Adobe Tech Support for that information. Be sure to ask for a manager when they answer.