Revert "common: override smartd.service with ConditionVirtualization=no"

It has been applied upstream[1] and released with smartmontools 7.2[2].

[1] https://github.com/smartmontools/smartmontools/commit/61bc85ecadf9e5596b140380fed701a674e38a1b
[2] https://github.com/smartmontools/smartmontools/releases/tag/RELEASE_7_2

This reverts commit b4c97002.

roles/common/files/smartd-override.conf

-[Unit]
-ConditionVirtualization=no

roles/common/tasks/main.yml

@@ -25,16 +25,8 @@
   pacman: name=smartmontools state=present
   when: "'hcloud' not in group_names"
 
-# override smartd.service with ConditionVirtualization=no
-# this should appear in the next upstream release, see https://github.com/smartmontools/smartmontools/issues/62
-- name: create drop-in directory for smartd.service
-  file: path=/etc/systemd/system/smartd.service.d state=directory owner=root group=root mode=0755
-
-- name: install drop-in snippet for smartd.service
-  copy: src=smartd-override.conf dest=/etc/systemd/system/smartd.service.d/override.conf owner=root group=root mode=0644
-
 - name: start and enable smart
-  service: name=smartd enabled=yes state=started daemon_reload=yes
+  service: name=smartd enabled=yes state=started
   when: "'hcloud' not in group_names"
 
 - name: start and enable btrfs scrub timer