comments, likes, posts, notifications and messages two way reference is not needed about orca

[DimiMikadze]

Hi @kamalyusuf, thanks for your information. I have difficulty understanding why everything will break if there are thousands of posts or likes.

I understand that the current database architecture is not perfect, but I don't think it will have problems on a smaller scale.

However, if you can provide detailed information about the problem and the solution you are thinking of. Then, I'd be glad to discuss it with you and finally merge your PR. If it's just a theoretical issue and you are not going to work on it, let's close it because we already have a similar one that nobody is working on: #181

In general, if somebody will be using Orca on millions of user scale, I'll be expecting their contribution to the project.