[CentOS] Vulnerabilities to bind-libs bind-utils - possible to remove these on webservers

I think the subject says it all.  We don't run named.  It seems there are chronic issues with bind.  Can these packages be removed?  

We locally authenticate. I see this:

Removing for dependencies:
 bind-utils
 ipa-client
 sssd
 sssd-ad
 sssd-ipa

We shouldn't need any of that with local authentication (/etc passwd and /etc/shadow) right?


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