Revert "Install all updates unattended."

This reverts commit 6c26983d85.

From the linux kernel update from 6.16 to 6.17 we learn: It is
not recommended to install updates unattended, c.f. Bug #1060052.

roles/lmn_fvs/tasks/main.yml

@@ -91,11 +91,6 @@
     src: policies.json
     dest: /etc/firefox-esr/policies/
 
-- name: Update all packages unattended
-  ansible.builtin.replace:
-    path: /etc/apt/apt.conf.d/50unattended-upgrades
-    regexp: '^//(\s+"origin=.+-updates";)$'
-    replace: '  \1'
 
 - name: Copy some scripts
   copy: