This video explains how to delete the user from REST API call using POSTMAN in CDI.
References:
Login V2 call: https://docs.informatica.com/cloud-common-services/administrator/current-version/rest-api-reference/platform-rest-api-version-2-resources/login.html
Login V3 call: https://docs.informatica.com/cloud-common-services/administrator/current-version/rest-api-reference/platform-rest-api-version-3-resources/login.html
User API: https://docs.informatica.com/cloud-common-services/administrator/current-version/rest-api-reference/platform-rest-api-version-3-resources/users.html