_deletePendingResStream(id, origin) {
		const stream = this.pendingResStreams.get(id);
		this.pendingResStreams.delete(id);

		if (stream) {
			this._destroyStreamIfPossible(stream, `Stream closed by ${origin}`);
		}
	}
Internal method to delete a pending response stream from `pendingResStreams`
and destroy it (if not already destroyed) with error.

@param {String} id ID of the stream in `pendingResStreams`
@param {String} origin NodeID of the origin of the destroy request

@memberof Transit