RemoveUnusedJenkinsBuilds.groovy

import hudson.maven.MavenModuleSet

hudson.model.Hudson.instance.items.findAll {
  job ->
    !job.isBuilding() && job.isBuildable() && job instanceof MavenModuleSet
}.each {
  job ->
    def builds = job.builds.collect {it.getDisplayName()}
    println("deleting modules for builds other than " + builds)
    job.getModules().each {
      module ->
        println("module name = " + module.name)
        module.builds.each {
          build ->
            if (!builds.contains(build.getDisplayName())) {
              println("deleting build " + build.getDisplayName())
              build.delete()
            }
        }
    }
}