[Fix] Remove docker service tasks

[AntoineDupre]

Enable docker service tasks does nothing on roles:

• roles/debian_physical_machine/tasks/main.yml
• roles/centos_physical_machine/tasks/main.yml

It misses enable: true and state: started

[insatomcat]

not quite sure about this one for 3 reasons:

1. docker was (historically) only needed for the ptpstatus service, but it's not true anymore, docker is currently not needed to what I can recall
2. All this (libvirt stuff, ptpstatus stuff...) should be in the hypervisor role anyway, it's not needed on an observer
3. even for upcoming container needs (I'm thinking prometheus exporter for instance), we are most likely transitionning to podman Podman & Docker TSC#43

[AntoineDupre]

I get your points.
Currently, the tasks exists and does nothing. I assumed that docker was expected to run as a service, but instead, the task shall just be removed.

Can i convert this PR to remove this docker service task ?

[insatomcat]

yes