Delete the given CloudFormation stack.

def delete(stack, region, profile):
    """
    Delete the given CloudFormation stack.
    """
    ini_data = {}
    environment = {}

    environment['stack_name'] = stack
    if region:
        environment['region'] = region
    else:
        environment['region'] = find_myself()

    if profile:
        environment['profile'] = profile

    ini_data['environment'] = environment

    if start_smash(ini_data):
        sys.exit(0)
    else:
        sys.exit(1)