CmdID / aws / aws proton
aws proton delete-environment-template-version
If no other minor versions of an environment template exist, delete a major version of the environment template if it's not the Recommended version. AWS CLI reference
3 options Its page in the AWS CLI reference
Options
--major-versionThe environment template major version to delete.--minor-versionThe environment template minor version to delete.--template-nameThe name of the environment template.