diff --git a/web/plugins/metrics/check_ntp.py b/web/plugins/metrics/check_ntp.py
deleted file mode 100644
index 9e6d41eceb92a7b29870f522152260378b224dc2..0000000000000000000000000000000000000000
--- a/web/plugins/metrics/check_ntp.py
+++ /dev/null
@@ -1,88 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-#
-# License: GNU General Public License v2
-#
-# Author: thl-cmk[at]outlook[dot]com
-# URL   : https://thl-cmk.hopto.org
-# Date  : 2022-10-06
-# File  : metrics/check_ntp.py
-#
-#
-
-from cmk.gui.i18n import _
-
-from cmk.gui.plugins.metrics import (
-    metric_info,
-    graph_info,
-    perfometer_info
-)
-
-metric_info['ntp_offset'] = {
-    'title': _('Offset'),
-    'unit': 's',
-    'color': '#9a52bf',
-}
-
-
-metric_info['ntp_delay'] = {
-    'title': _('Delay'),
-    'help': _(''),
-    'unit': 's',
-    'color': '26/a',
-}
-
-metric_info['ntp_root_dispersion'] = {
-    'title': _('Root dispersion'),
-    'help': _(''),
-    'unit': 's',
-    'color': '32/a',
-}
-
-
-graph_info['check_ntp_offset'] = {
-    'title': _('Time offset'),
-    'metrics': [
-        ('ntp_offset', 'area'),
-    ],
-    'scalars': [
-        ('ntp_offset:crit', _('Upper critical level')),
-        ('ntp_offset:warn', _('Upper warning level')),
-        ('0,ntp_offset:warn,-', _('Lower warning level')),
-        ('0,ntp_offset:crit,-', _('Lower critical level')),
-    ],
-    'range': ('0,ntp_offset:crit,-', 'ntp_offset:crit'),
-}
-
-graph_info['check_ntp_delay'] = {
-    'title': _('Delay'),
-    'metrics': [
-        ('ntp_delay', 'area'),
-    ],
-    'scalars': [
-        ('ntp_delay:crit', _('Critical')),
-        ('ntp_delay:warn', _('Warning')),
-    ],
-    'range': (0, 'ntp_delay:max'),
-}
-
-
-graph_info['check_ntp_dispersion'] = {
-    'title': _('Root dispersion'),
-    'metrics': [
-        ('ntp_root_dispersion', 'area'),
-    ],
-    'scalars': [
-        ('ntp_root_dispersion:crit', _('Critical')),
-        ('ntp_root_dispersion:warn', _('Warning')),
-    ],
-    'range': (0, 'ntp_root_dispersion:max'),
-}
-
-
-perfometer_info.append({
-    'type': 'logarithmic',
-    'metric': 'ntp_offset',
-    'half_value': 1.0,
-    'exponent': 10.0,
-})