Demote Unity config MessagePack metadata

Assets/Scripts/ServerShared/EnumDictionary.cs

@@ -1,9 +1,7 @@
 using System;
-using MessagePack;
-[MessagePackObject]
 public class EnumDictionary<E, T> where E : Enum
 {
-    [Key(0)] public T[] Values;
+    public T[] Values;
 
     public EnumDictionary()
     {
@@ -11,4 +9,4 @@ public class EnumDictionary<E, T> where E : Enum
     }
 
     public T this[E key] => Values[Convert.ToInt32(key)];
-}
+}