define a unseeding forums permissions and call into it from delete_course

define a unseeding forums permissions and call into it from delete_course

define a unseeding forums permissions and call into it from delete_course

common/djangoapps/django_comment_common/utils.py

@@ -32,6 +32,30 @@ def seed_permissions_roles(course_id):
     administrator_role.inherit_permissions(moderator_role)
 
 
+def unseed_permissions_roles(course_id):
+    """
+    A utility method to clean up all forum related permissions and roles
+    """
+    administrator_role = Role.objects.get_or_create(name="Administrator", course_id=course_id)[0]
+    moderator_role = Role.objects.get_or_create(name="Moderator", course_id=course_id)[0]
+    community_ta_role = Role.objects.get_or_create(name="Community TA", course_id=course_id)[0]
+    student_role = Role.objects.get_or_create(name="Student", course_id=course_id)[0]
+
+    # safety switches in case the casing does not match
+
+    if administrator_role.course_id == course_id:
+        administrator_role.delete()
+
+    if moderator_role.course_id == course_id:
+        moderator_role.delete()
+
+    if community_ta_role.course_id == course_id:
+        community_ta_role.delete()
+    
+    if student_role.course_id == course_id:
+        student_role.delete()
+
+
 def are_permissions_roles_seeded(course_id):
 
     try: