[ISSUE#3179]Remove original NotifyCenter codes in the core module.

[zongtanghu]

Please do not create a Pull Request without creating an issue first.

What is the purpose of the change

Remove original NotifyCenter codes in the core module.

Brief changelog

For #3179

Verifying this change

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[zongtanghu]

Please help to review this pr, thanks. @KomachiSion @chuntaojun