function labelsFromTicks(ticks) {
	var labels = [];
	var i, ilen;

	for (i = 0, ilen = ticks.length; i < ilen; ++i) {
		labels.push(ticks[i].label);
	}

	return labels;
}
@method IPlugin#destroy
@desc Called after the chart as been destroyed.
@param {Chart.Controller} chart - The chart instance.
@param {Object} options - The plugin options.