deactivate
Deactivates the feature on the connected device.
During the call, feature emits LoadingState.InProgress. On success, feature emits null with LoadingState.Done.
If the feature is already inactive this call is a no-op and still returns ProcessingFeatureActivationResult.Success.
Return
ProcessingFeatureActivationResult.Success when the device acknowledges the change (or it was already inactive); ProcessingFeatureActivationResult.Failure otherwise.