Delete psu_wattage.py

web/plugins/metrics/psu_wattage.py

-#!/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  : 2023-03-30
-#
-
-from cmk.gui.plugins.metrics.utils import (
-    perfometer_info,
-)
-
-perfometer_info.append(
-    {
-        'type': 'logarithmic',
-        'metric': 'power_usage',
-        'half_value': 200.0,
-        'exponent': 2,
-    }
-)