I added it since the old API has the method.  However, we could probably do without it.  I suspect the main reason for having the old method is to make it easy to determine the block face that is targeted, with ``result.get(1).getFace(result.get(0))``.  But the new API provides the ``BlockTargetResult#getFace()`` method to do that.  In addition, the old API method of determining the face doesn't work well if the player is extremely close to the target block (the returned list may have only a single element).

So yeah, there probably isn't a need for ``getLastTwoTargetBlocks()``.