Bug 327925 Deprecate EPartService's deactivate(MPart) method
It has been marked as @noreference for some time. Now that part activation history has been implemented and the hidePart(*) methods have been altered to take care of this, the deactivate(MPart) method should be removed.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/workbench/modeling/EPartService.java
* supplied, then the part will be made visible but not given focus. If <code>CREATE</code> is
	 * supplied, then the part will be instantiated though its contents may not necessarily be
	 * visible to the end user.
	 * </p>
	 * 
	 * @param part
	 *            the part to show
	 * @param partState
	 *            the desired state of the shown part to be in
	 * @return the shown part
	 */
	public MPart showPart(MPart part, PartState partState);
	/**
	 * Hides the given part. The part must be a part managed by this service.
	 * <p>
	 * If the part has been tagged with the {@link #REMOVE_ON_HIDE_TAG} tag, it will be removed from
	 * the model when the service hides it.
	 * </p>
	 * 
	 * @param part
	 *            the part to hide
	 */
	public void hidePart(MPart part);
	/**
	 * Hides the given part. The part must be a part managed by this service.
	 * <p>
	 * If <code>force</code> is <code>true</code> or the part has been tagged with the
	 * {@link #REMOVE_ON_HIDE_TAG} tag, it will be removed from the model when the service hides it.
	 * </p>
	 *