public StageConfig removeStage(String pipelineName, String stageName) {
   CruiseConfig cruiseConfig = loadForEdit();
   PipelineConfig pipelineConfig =
       cruiseConfig.pipelineConfigByName(new CaseInsensitiveString(pipelineName));
   StageConfig stageConfig = pipelineConfig.findBy(new CaseInsensitiveString(stageName));
   pipelineConfig.remove(stageConfig);
   writeConfigFile(cruiseConfig);
   return stageConfig;
 }