Deletes the deployment associated with the specified function. Upon deletion, any active instances will be terminated, and the function's status will transition to 'INACTIVE'. To undeploy a function version gracefully, specify 'graceful=true' query parameter, allowing current tasks to complete before terminating the instances. If the specified function version is public, then Account Admin cannot perform this operation. Access to this endpoint mandates a bearer token with 'deploy_function' scope in the HTTP Authorization header.