chore(home/models.py): remove redundant group assigning logic (built into wagtail)

home/models.py

@@ -1,8 +1,5 @@
-from django.db import models
-
 from wagtail.models import Page
 from wagtail.fields import RichTextField
-from django.contrib.auth.models import Group
 
 
 class HomePage(Page):
@@ -13,28 +10,5 @@ class HomePage(Page):
 
 class CoursePage(Page):
     body = RichTextField(blank=True)
-    group = models.ForeignKey(
-        Group,
-        on_delete=models.CASCADE,
-        null=True,
-        blank=True,
-        help_text="Only members of this group can access this course.",
-    )
 
-    content_panels = Page.content_panels + [
+    content_panels = Page.content_panels + ["body"]
-        "body",
-        "group",
-    ]
-
-    def serve(self, request):
-        if self.group:
-            if (
-                not request.user.is_authenticated
-                or self.group not in request.user.groups.all()
-            ):
-                from django.shortcuts import render
-
-                # render 403.html
-                return render(request, "403.html", status=403)
-
-        return super().serve(request)