Bug 234345 [Viewers] AbstractTreeViewer#getChildren(Widget,Object[]) holds doc that it is experimental
a) Remove the experimental description => Why do we need this method b) Remove the method
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
* @param elements
	 *            the elements to remove
	 *
	 * @since 3.2
	 */
	public void remove(final Object parent, final Object[] elements) {
		assertElementsNotNull(elements);
		if (elements.length == 0) {
			return;
		}
		if (checkBusy())
			return;
		preservingSelection(new Runnable() {
			public void run() {
				internalRemove(parent, elements);
			}
		});
	}
	/**
	 * Removes the given element from the viewer. The selection is updated if
	 * necessary.
	 * <p>
	 * This method should be called (by the content provider) when a single
	 * element has been removed from the model, in order to cause the viewer to
	 * accurately reflect the model. This method only affects the viewer, not
	 * the model. Note that there is another method for efficiently processing
	 * the simultaneous removal of multiple elements.
	 * </p>
	 *
	 * @param elementsOrTreePaths