Mouting /var/lib/docker/containers seems useless

[jayl1e]

opentelemetry-helm-charts/charts/opentelemetry-collector/templates/_pod.tpl

Line 151 in ee3e4fa

- name: varlibdockercontainers

The host path seems useless, especially for k8s nowadays.
k8s has deprecated docker engine since v1.20

[JaredTan95]

I suggest we keep it

[TylerHelmuth]

I agree we should probably keep it until k8s completely drops support.