Revert "Router: Enable soft updates."

This reverts commit a3ea3389.

I was the impression that soft updates improve reliability but in fact
they reduce it (had a couple of power outages and it would only boot in
single user mode and all of the partitions required an fsck).

Ansible/roles/router/tasks/main.yaml

 ---
-- name: Set soft updates on all mounts
-  with_items: |-
-    {{ ansible_mounts | selectattr("fstype", "equalto", "ffs") }}
-  ansible.posix.mount:
-    backup: true
-    boot: true
-    fstype: "{{ item.fstype }}"
-    opts: |-
-      {{ (item.options.split(",") + ["softdep"]) | unique | join(",") }}
-    path: "{{ item.mount }}"
-    src: "{{ item.device }}"
-    state: present
-  notify:
-    - Message about restarting the machine
-  tags:
-    - mounts
-
 - name: Configure sysctl
   with_dict:
     net.inet.ip.forwarding: "1"