This is not a SAS/IntrNet forum. Although stored processes are similar to Application Dispatcher programs and the stored process server is similar to the SAS/IntrNet compute services server, the two installs (and uninstalls) are different.
If you don't have the original SAS/IntrNet install doc or know the directories where the BROKER.EXE and other programs were installed, you might wish to open a track with Tech Support on this question.
There is not a forum topic for SAS/IntrNet specifically. I believe that when you order SAS/IntrNet that the install documentation comes tailored to the server/OS you ordered for. There are different install instructions for different servers -- which is why I recommended Tech Support -- they might be able to go back to your site's original order for SAS/IntrNet and find the type of install instructions that were originally sent in order to help you uninstall or to provide you guidance on uninstalling.