Is it necessary to define dns rules in Windows Server beside CloudFlare

Hi
We have a site on a Windows Server 2019, We have defined rules for DNS in windows server DNS service and our site was working correctly.
Two days ego we started to using CloudFlare as CDN for our site , and we defined DNS rules here.
I have this question that I should delete the dns rules in windows server?

I’m not sure this has to do with domain registration (Registrar).

What type of DNS Rules are you talking about?