Remove all dependencies that are not open source

[shanmu-raoyunfei]

It's a great project, and it would be even better to remove all the dependencies from non-open source projects, such as azure web subpub, etc

[Chkhikvadze]

We are currently using Azure Web PubSub for real-time notifications, and while we cannot remove it at this time, we plan to add additional options in the future.