def delete_load_balancer(access_token, subscription_id, resource_group, lb_name):
    '''Delete a load balancer.

    Args:
        access_token (str): A valid Azure authentication token.
        subscription_id (str): Azure subscription id.
        resource_group (str): Azure resource group name.
        lb_name (str): Name of the load balancer.

    Returns:
        HTTP response.
    '''
    endpoint = ''.join([get_rm_endpoint(),
                        '/subscriptions/', subscription_id,
                        '/resourceGroups/', resource_group,
                        '/providers/Microsoft.Network/loadBalancers/', lb_name,
                        '?api-version=', NETWORK_API])
    return do_delete(endpoint, access_token)
Delete a load balancer.

    Args:
        access_token (str): A valid Azure authentication token.
        subscription_id (str): Azure subscription id.
        resource_group (str): Azure resource group name.
        lb_name (str): Name of the load balancer.

    Returns:
        HTTP response.