@AutoPayloadType(description = "The Trackable from which the Label was removed")
suspend fun removeLabelFromTrackable(input: RemoveLabelFromTrackableInput, dfe: DataFetchingEnvironment): Trackable

Removes a Label from a Trackable, requires MANAGE_LABELS on the Trackable. Removes the Label from all Issues where the Label cannot be anymore, as the Trackable of the Label and the Issue are now disjoint.