Check out notification after deleting other comment, with unchecked "Auto subscribe"

Pre-condition:

1. User1 and User2 are registered and logged in
2. At least one branch is created
3. User1 createed a topic
4. At least one comment is left by other user in this topic
5. User1 has unchecked "Auto subscribe" checkbox in the profile
6. User2 has permission DELETE_OTHERS_POSTS
7. User1 has permission CREATE_POSTS