No that was never written. One can do either, but one would have to use a scripting data source and perhaps supporting points to make it happen.
//Export all data for point cxtPnt into an SQL table...
var pvd = com.serotonin.m2m2.Common.databaseProxy.newPointValueDao();
pvd.getPointValuesBetween( cxtPnt.getDataPointWrapper().getId(), 0, java.lang.Long.MAX_VALUE, function(pvt) {
sqlContextPoint.set('(' + pvt.getValue().toString() + ',' + pvt.getTime() + ')', pvt.getTime());
//sqlContextPoint is an 'update tables only' point on an SQL data source
});
And there would be a similar way to write those out to a file or wherever.