[agents] Exclude metadata fields from agent session edit form

vrobbler/apps/agents/models.py

@@ -5,7 +5,6 @@ from typing import Optional
 
 import bleach
 import markdown
-from django import forms
 from django.conf import settings
 from django.db import models
 from django.urls import reverse
@@ -52,15 +51,7 @@ class AgentSessionLogData(BaseLogData):
     turns: Optional[list] = None
     forked_from_id: Optional[int] = None
 
-    _excluded_fields = {"turns"}
-
-    @classmethod
-    def override_fields(cls) -> dict:
-        return {
-            "title": forms.CharField(required=False),
-            "provider": forms.CharField(required=False),
-            "model": forms.CharField(required=False),
-        }
+    _excluded_fields = {"turns", "title", "provider", "model", "forked_from_id"}
 
     @property
     def pending(self) -> bool: