This workshop is created in the AWS workshop template, so acctually you can just delete resource related to section 5.3, and disable any resources that you have integrated with Security Hub. We will take the following steps to delete the resources we created in this exercise.
Remove the aws-sharr-member.template from each member account.
Remove the aws-sharr-admin.template from the admin account.
Remove SO0111-* IAM roles.
Remove CloudWatch logging.