remove source repos which continuously fail to build on the farm

    Traceback (most recent call last):
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/devel", line 43, in <module>
        main()
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/devel", line 37, in main
        repo_sourcespace=repo_sourcespace)
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/test_repositories.py", line 69, in test_repositories
        sudo, no_chroot)
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/test_repositories.py", line 134, in _test_repositories
        apt_get_install(repo_build_dependencies, rosdep_resolver, sudo)
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/common.py", line 28, in apt_get_install
        pkgs = rosdep.to_aptlist(pkgs)
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/rosdep.py", line 44, in to_aptlist
        for a in self.to_apt(r):
      File "/home/rosbuild/hudson/workspace/devel-indigo-rocon/ARCH_PARAM/amd64/UBUNTU_PARAM/trusty/label/devel/jenkins_scripts/rosdep.py", line 57, in to_apt
        return self.r2a[ros_entry]
    KeyError: 'rocon_concert'