The Organization resource is bound to your G Suite or Cloud Identity account, now that you have added it. If you would prefer not to use the Organization resource, we recommend restoring the Organization's IAM policy to the original state using the following steps:
1. Add your domain to the Project Creator and Billing Account Creator roles.
2. Remove all other entries in the Organization's IAM policy.
You may read related information on the "Creating and Managing Organizations" documentation page, specifically in the "Deleting an Organization resource"
sub-chapter.