message: cleanup of unused code
diff: import * as cdk from '@aws-cdk/core';
  import lambda = require('@aws-cdk/aws-lambda');
  -import { CfnApiKey, PrimaryKey, Values, GraphQLApi, MappingTemplate, UserPoolDefaultAction, FieldLogLevel } from '@aws-cdk/aws-appsync';
  -import { UserPool } from "@aws-cdk/aws-cognito";
  +import { CfnApiKey, PrimaryKey, Values, GraphQLApi, MappingTemplate, FieldLogLevel } from '@aws-cdk/aws-appsync';
  import { AttributeType, BillingMode, Table } from '@aws-cdk/aws-dynamodb';
  import { join } from 'path';
  @@ -9,29 +8,11 @@ export class TheSimpleGraphQLServiceStack extends cdk.Stack {
  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
  super(scope, id, props);
  - /**
  - * Create a new Cognito User Pool
  - */
  - const userPool = new UserPool(this, 'UserPool', {
  - userPoolName: 'the-simple-graphql-service-userpool'
  - });
  -
  /**
  * Create a new AppSync GraphQL API
  */
  const api = new GraphQLApi(this, 'Api', {
  name: `demoapi`,
  - // authorizationConfig: {
  - // defaultAuthorization: {
  - // userPool,
  - // defaultAction: UserPoolDefaultAction.ALLOW,
  - // },
  - // additionalAuthorizationModes: [
  - // {
  - // apiKeyDesc: 'the-simple-graphql-service-api-key',
  - // },
  - // ],
  - // },
  logConfig: {
  fieldLogLevel: FieldLogLevel.ALL,
  },
  