Remove non-free skins by Moby Dog (fixes #2547)

CMakeLists.txt

@@ -1161,15 +1161,7 @@ set(EXPECTED_DATA
   shader/text.vert
   shader/tile.frag
   shader/tile.vert
-  "skins/Ablush NeoN.png"
   skins/Aoe4leg.png
-  "skins/Apish Coke.png"
-  "skins/Black Phantom heinrich5991.png"
-  "skins/Evil Puffi.png"
-  "skins/Flying Silex.png"
-  "skins/Hidden Assassin.png"
-  "skins/Irradiated Sunny.png"
-  "skins/Mobys Skull.png"
   skins/PaladiN.png
   skins/Terrorist.png
   skins/antiantey.png

data/skins/license.txt

@@ -43,12 +43,5 @@ Aoe4legs:
 Copyright Aoe
 CC0 license
 
-Ablush NeoN, Apish Coke, Black Phantom heinrich5991, Evil Puffi, Flying Silex,
-Hidden Assassin, Irradiated Sunny, Mobys Skull:
-Copyright Moby Dog
-CC-BY-NC-ND license
-Permission to modify the skins to fit other skin systems (split it into parts,
-etc.) and publish them under the same license was given.
-
 All other skins:
 All content is released under CC-BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/).