def delete_file_nokia_sros(ssh_conn, dest_file_system, dest_file):
    """Delete a remote file for a Nokia SR OS device."""
    full_file_name = "{}/{}".format(dest_file_system, dest_file)
    cmd = "file delete {} force".format(full_file_name)
    cmd_prefix = ""
    if "@" in ssh_conn.base_prompt:
        cmd_prefix = "//"
    ssh_conn.send_command(cmd_prefix + "environment no more")
    output = ssh_conn.send_command_timing(
        cmd_prefix + cmd, strip_command=False, strip_prompt=False
    )
    return output