Drop checks for course group owner-/membership in predicates

aleksis/apps/alsijil/util/predicates.py

@@ -354,8 +354,6 @@ def is_lesson_event_member(user: User, obj: LessonEvent):
     or a members of the course, if the lesson event has one.
     """
     if obj:
-        if obj.course and is_course_member(user, obj.course):
-            return True
         for g in obj.groups.all():
             if user.person in g.members.all():
                 return True
@@ -372,8 +370,6 @@ def is_lesson_event_group_owner(user: User, obj: LessonEvent):
     or a owner of any group linked to the course, if the lesson event has one.
     """
     if obj:
-        if obj.course and is_course_group_owner(user, obj.course):
-            return True
         for g in obj.groups.all():
             if user.person in g.owners.all():
                 return True
@@ -396,8 +392,6 @@ def can_view_documentation(user: User, obj: Documentation):
         if obj.course:
             return (
                 is_course_teacher(user, obj.course)
-                | is_course_member(user, obj.course)
-                | is_course_group_owner(user, obj.course)
             )
     return False
 
@@ -411,5 +405,5 @@ def can_edit_documentation(user: User, obj: Documentation):
                 user, obj.lesson_event
             )
         if obj.course:
-            return is_course_teacher(user, obj.course) | is_course_group_owner(user, obj.course)
+            return is_course_teacher(user, obj.course)
     return False