Currently there seems to be no endpoint in the 3scale API that is meant to disable Service Plan Features.

The following operation:

Service Plan Feature Add (/admin/api/service_plans/{service_plan_id}/features.xml)

enables a feature for the given Service Plan, but there is no counterpart to disable it, therefore this action has to be done necessarily via UI.

The request is to implement an operation (e.g. Service Plan Feature Disable) to disable a feature for the given Service Plan.
Update:
turns out the Service Plan Features Delete operation exists but doesn't appear in the Admin Portal 3scale API Docs.

h3. Dev notes

Add missing API endpoints:

enable
disable
delete