[unity] Minor cleanup.

spine-unity/Assets/spine-unity/Asset Types/SkeletonDataAsset.cs

@@ -98,7 +98,7 @@ namespace Spine.Unity {
 				return null;
 			}
 
-			// Support attachmentless/skinless SkeletonData.
+			// Disabled to support attachmentless/skinless SkeletonData.
 //			if (atlasAssets == null) {
 //				atlasAssets = new AtlasAsset[0];
 //				if (!quiet)

spine-unity/Assets/spine-unity/SkeletonAnimator.cs

@@ -120,7 +120,6 @@ namespace Spine.Unity {
 			}
 
 			public void Apply (Skeleton skeleton) {
-
 				if (layerMixModes.Length < animator.layerCount)
 					System.Array.Resize<MixMode>(ref layerMixModes, animator.layerCount);