fix: Prepares for IPooledEnumerable removal (#1548)

### Summary

- Removes `IPooledEnumerable` (non-generic)
- Changes `IPooledEnumerable<T>` so that  `Free()` is replaced with the `IDisposable` pattern

Projects/UOContent/Engines/Ethics/Core/Ethic.cs

@@ -167,8 +167,6 @@ namespace Server.Ethics
                         }
                     }
 
-                    eable.Free();
-
                     if (!found)
                     {
                         continue;