Use group root for /etc/localtime on Linux.

Arch Linux kept changing the group to root, so this change is to avoid unexpected "changed" entries in the ansible diff.

ansible/roles/base/tasks/common.yaml

@@ -29,15 +29,6 @@
       - meld
     state: present
 
-- name: Set timezone
-  file:
-    src: "/usr/share/zoneinfo/{{ timezone|default('UTC') }}"
-    dest: /etc/localtime
-    owner: root
-    # TODO: Arch Linux is changing the group to root instead of wheel. Maybe make this a variable?
-    group: wheel
-    state: link
-
 - name: Install scripts
   copy:
     src: "files/{{ item.src }}"