Yes, it can be deleted. The high probability is that hr is not interested in you. But no matter what the purpose is, the most basic etiquette should still be there. This is the result of family education since childhood. Even if you really don't want to pay attention, you can reply that you are busy, but it's really wrong to send WeChat all the time.

There's no need to ask for the result. This is not a question of whether the company hr wants you or not, but a question of basic courtesy.