This is the mailing list for Jenkins infrastructure. We use it to discuss things related to the global Jenkins infrastructure. I'm not clear that your question is related to Jenkins global infrastructure.
If you are trying to remove a plugin from a Jenkins controller, then this is definitely not the right place to ask. Ask on the Jenkins user mailing list or on
community.jenkins.io The Jenkins plugin manager is the easiest place to remove a plugin from a Jenkins controller.
If you are trying to remove a Jenkins plugin from worldwide distribution, then your alternatives include: