Why am I Unable to Remove Files?

[mahesh]

Ubuntu 20.0.4

I installed ClamAV and then uninstalled it, but there are some files left on the system, which are configuration files, that are owned by root. I have tried the <rm> with/without <sudo>, which resulted in this: cannot remove 'clamconf': No such file or directory. I can see them in /usr/bin. How do I remove these files?