cull(engine-cleanup): pass-8 phase-2 cascade round 1

[trim] fully-unreachable files deleted: 6
[trim] files edited: 55, files deleted: 0, nodes removed: 244
[type-trim] files edited: 1, types removed: 1

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.BattleEngine/Engine/Wizard/ClassCharacterMasterData.cs

@@ -97,15 +97,6 @@ public class ClassCharacterMasterData
 		return Data.Master.GetClassCharaText(id);
 	}
 
-	public void Acquired()
-	{
-		if (!IsAcquired)
-		{
-			IsAcquired = true;
-			IsNew = true;
-		}
-	}
-
 	public void UnsetNew()
 	{
 		IsNew = false;