@Override
	public void clear() {
		listener = null;
		buttonGroup.remove(leftListChoice.rb);
		buttonGroup.remove(rightListChoice.rb);
		leftListChoice.rb.setSelected(false);
		rightListChoice.rb.setSelected(false);
		buttonGroup.add(leftListChoice.rb);
		buttonGroup.add(rightListChoice.rb);
//		List<String[]> noData = new ArrayList<String[]>();
//		leftListChoice.setData(new String[0], noData);
//		rightListChoice.setData(new String[0], noData);
//		setHeader(null);
		rowPanel.validate();
		validate();
		invalidate();
	}
Removes header text for this panel and all table/row information.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ScrollingListChoicesPanel.java