Delete dell_powerconnect_psu

packages/dell_powerconnect_psu

-{'author': 'thl-cmk[at]outlook[dot]com',
- 'description': 'Rewrite of CMKs dell_powerconnect_psu check for CMK2.1\n'
-                '\n'
-                '- fixes missing PSUs if there are different PSUs with the '
-                'same name\n'
-                '- adds current power usage as perfdata \n',
- 'download_url': 'https://thl-cmk.hopto.org',
- 'files': {'agent_based': ['dell_powerconnect_psu.py'],
-           'checks': ['dell_powerconnect_psu'],
-           'web': ['plugins/metrics/psu_wattage.py']},
- 'name': 'dell_powerconnect_psu',
- 'title': 'Dell Power connect PSU',
- 'version': '20230330.v0.0.3',
- 'version.min_required': '2.0.0',
- 'version.packaged': '2.1.0p21',
- 'version.usable_until': None}