Since the available disk space on my Jenkins box decreased dramatically within the last days, I was looking for a way to find the "biggest" jobs - enter the Disk Usage plugin.
After some hours(!), this plugin provided an overview of how much space is occupied by which job - very nice.
Not so nice (but rather annoying) is that it adds a badge to every build of the build history, which contains the space occupied by this build - that's information overflow, and (also thanks to the Sonar plugin and the Artifactory plugin) the build history looks like a battlefield :(
So, how to remove this plugin? Simple delete it and restart leads to thousands of stacktraces (ClassNotFoundException), since the plugin has added itself to every single build.
Solution:
Before removing the plugin, execute the following code in the Jenkins script console (available on the "Manage Jenkins" page):
This removes the plugin references from all builds, so now the plugin itself can be deleted without problems.