I just had a look at Goblin King's Dwarf deck. He's using Gimli and my first thought was "why Gimli, if you have the Erebor Battlemaster"? And as Gimli is the only hero that makes regular use of "Dwarven Axe", I think the latter has also become obsolete.
Or are there still players that use Gimli? Isn't Thalin now way better? And are there still decks that include Dwarven Axe? If yes, do you really play it?