def METHOD_NAME(template_name: str) -> None:
    """
    Wrapper for calling the CLI to delete the specified BOS session template.
    Uses BOS v2 since the version makes no difference to the results in this case.
    Returns nothing.
    Raises BosCliError on error.
    """
    delete_command = ["cray", "bos", "v2", "sessiontemplates", "delete", template_name]
    try:
        subprocess.run(delete_command, stdout=subprocess.PIPE, check=True)
    except subprocess.CalledProcessError as exc:
        raise BosCliError(f"Failed to delete template '{template_name}': {exc}") from exc