Bug 174701 [Viewers] ViewerRow should be reused instead of connected to the Item
Currently we create a ViewerRow ver every Item we create this can degrade performance, we should cache the row and reuse it
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
* EXPERIMENTAL. Not to be used except by JDT. This method was added to
	 * support JDT's explorations into grouping by working sets, which requires
	 * viewers to support multiple equal elements. See bug 76482 for more
	 * details. This support will likely be removed in Eclipse 3.2 in favour of
	 * proper support for multiple equal elements.
	 * </p>
	 * 
	 * @param elementsOrPaths
	 *            the elements or element paths to remove
	 * @since 3.1
	 */
	protected void internalRemove(Object[] elementsOrPaths) {
		Object input = getInput();
		for (int i = 0; i < elementsOrPaths.length; ++i) {
			Object element = elementsOrPaths[i];
			if (equals(element, input)) {
				setInput(null);
				return;
			}
			Widget[] childItems = internalFindItems(element);
			for (int j = 0; j < childItems.length; j++) {
				Widget childItem = childItems[j];
				if (childItem instanceof Item) {
					disassociate((Item) childItem);
					childItem.dispose();
				}
			}
		}
	}
	/**