Set docker log driver to journald on Fedora CoreOS

* Before Kubernetes v1.18.0, Kubelet only supported kubectl
`--limit-bytes` with the Docker `json-file` log driver so
the Fedora CoreOS default was overridden for conformance.
See https://github.com/poseidon/typhoon/pull/642
* Kubelet v1.18+ implemented support for other docker log
drivers, so the Fedora CoreOS default `journald` can be
used again

Rel: https://github.com/kubernetes/kubernetes/issues/86367

google-cloud/fedora-coreos/kubernetes/fcc/controller.yaml

@@ -187,19 +187,6 @@ storage:
           DefaultCPUAccounting=yes
           DefaultMemoryAccounting=yes
           DefaultBlockIOAccounting=yes
-    - path: /etc/sysconfig/docker
-      mode: 0644
-      overwrite: true
-      contents:
-        inline: |
-          # Modify these options if you want to change the way the docker daemon runs
-          OPTIONS="--selinux-enabled \
-            --log-driver=json-file \
-            --live-restore \
-            --default-ulimit nofile=1024:1024 \
-            --init-path /usr/libexec/docker/docker-init \
-            --userland-proxy-path /usr/libexec/docker/docker-proxy \
-          "
     - path: /etc/etcd/etcd.env
       mode: 0644
       contents:

google-cloud/fedora-coreos/kubernetes/workers/fcc/worker.yaml

@@ -110,19 +110,6 @@ storage:
           DefaultCPUAccounting=yes
           DefaultMemoryAccounting=yes
           DefaultBlockIOAccounting=yes
-    - path: /etc/sysconfig/docker
-      mode: 0644
-      overwrite: true
-      contents:
-        inline: |
-          # Modify these options if you want to change the way the docker daemon runs
-          OPTIONS="--selinux-enabled \
-            --log-driver=json-file \
-            --live-restore \
-            --default-ulimit nofile=1024:1024 \
-            --init-path /usr/libexec/docker/docker-init \
-            --userland-proxy-path /usr/libexec/docker/docker-proxy \
-          "
 passwd:
   users:
     - name: core