def cleanTempDirs(job):
    """Remove temporarly created directories."""
    if job is CWLJob and job._succeeded:  # Only CWLJobs have this attribute.
        for tempDir in job.openTempDirs:
            if os.path.exists(tempDir):
                shutil.rmtree(tempDir)
        job.openTempDirs = []
Remove temporarly created directories.