fix(core): remove JEngine.Util reference from HotUpdate.Code

HotUpdate code should not directly depend on utility packages.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: JasonXuDeveloper - 傑 <jason@xgamedev.net>

Author: JasonXuDeveloper

UnityProject/Assets/HotUpdate/Code/HotUpdate.Code.asmdef

@@ -11,8 +11,7 @@
         "GUID:e34a5702dd353724aa315fb8011f08c3",
         "GUID:3fe1a3e70da50184f9897101cad7e4f2",
         "GUID:6055be8ebefd69e48b49212b09b47b2f",
-        "GUID:ba02d1bbd77cf4a0c8606d3e5cbbbe79",
-        "GUID:5c8e1f4d7a3b9e2c6f0d8a4b7e3c1f9d"
+        "GUID:ba02d1bbd77cf4a0c8606d3e5cbbbe79"
     ],
     "includePlatforms": [],
     "excludePlatforms": [],