# File lib/openshift-origin-controller/app/models/cloud_user.rb, line 241
  def remove_system_ssh_key(app_name)
    self.system_ssh_keys = {} unless self.system_ssh_keys    
    key = self.system_ssh_keys[app_name]
    return unless key
    self.system_ssh_keys.delete app_name
    add_save_job('removes', 'ssh_keys', [key, app_name])
  end