Flash MX 2004.
timeline.deleteLayer([index])
index A zero-based index that specifies the layer to be deleted. If there is only one layer in the timeline, this method has no effect. This parameter is optional.
Nothing.
Method; deletes a layer. If the layer is a folder, all layers within the folder are deleted. If you do not specify the layer index, Animate deletes the currently selected layers.
The following example deletes the second layer from the top:
fl.getDocumentDOM().getTimeline().deleteLayer(1);The following example deletes the currently selected layers:
fl.getDocumentDOM().getTimeline().deleteLayer();