how to completely stop clamd at amavisd.service

[Damian]

> [root at 9e2e82f6e9d8 /]# cat /etc/centos-release
> CentOS Linux release 7.8.2003 (Core)
> [root at 9e2e82f6e9d8 /]# grep clam /lib/systemd/system/amavisd.service
> Wants=clamd at amavisd.service

>From [1]:

> Wants=
>
> Configures requirement dependencies on other units. [...]
>     Units listed in this option will be started if the configuring
> unit is.
You might want to look into systemd drop-in files.

[1] https://www.freedesktop.org/software/systemd/man/systemd.unit.html