Remove ntp for Debian<10 or Ubuntu<18

hshbase/time/init.sls

 {% from "hshbase/map.jinja" import hshbase with context %}
 
-{# We stick with ntpd for debian boxes before buster and for ubuntu boxes before bionic #}
-{% if (grains['os'] == 'Debian' and grains['osmajorrelease'] < 10) or (grains['os'] == 'Ubuntu' and grains['osmajorrelease'] < 18) %}
-ntp:
-  pkg.installed:
-    - refresh: True
-
-/etc/ntp.conf:
-  file.managed:
-    - source: salt://hshbase/time/files/ntp.conf
-    - template: jinja
-    - context:
-      hshbase: hshbase
-    - require:
-      - pkg: ntp
-
-hsh_ntp_service_running:
-  service.running:
-    - name: ntp
-    - reload: True
-    - enable: True
-    - watch:
-      - file: /etc/ntp.conf
-    - require:
-      - file: /etc/ntp.conf
-      - pkg: ntp
-
-{# The new boxes ensure the old stuff is away and the rest is configured in the interfaces section #}
-{% elif (grains['os'] == 'Debian' and grains['osmajorrelease'] >= 10) or grains['os'] == 'Ubuntu' and grains['osmajorrelease'] >= 18 %}
+{% if (grains['os'] == 'Debian' and grains['osmajorrelease'] >= 10) or grains['os'] == 'Ubuntu' and grains['osmajorrelease'] >= 18 %}
 
 ntp:
   pkg.purged
@@ -44,10 +17,6 @@ hsh_ntp_service_not_running:
       - file: /etc/ntp.conf
       - pkg: ntp
 
-{% elif grains['os'] == 'FreeBSD' %}
-
-{# TODO: Manage /etc/ntp.conf file. #}
-
 {% endif %}
 
 hsh_server_timezone: