Remove cnpy.gdn to rollback #633

[groundcat]

This PR is to remove cnpy.gdn to rollback #633

Related issue #2172

Evidence:

• The WHOIS creation date Creation Date: 2017-08-25T00:11:00Z is later than the PSL inclusion date, suggesting the domain was likely allowed to expire.
• The organization website (https://cnpy.gdn) is not functioning.
• ⚠️ Pending reply: Email confirmation sent on 09/18/2024 to both the email listed in PSL and the requestor's personal blog profile email.
• The Google search and Bing search show no results for the domain.
• Certificate Transparency reveals no active SSL certificates in use. Nothing after 2020-10-27.
• From Candidates for removal #2172: The domain cnpy.gdn is expired according to WHOIS. However, it still has NS records, and _psl.cnpy.gdn incorrectly points to add nerdpol.ovh, part of nsupdate.info dyndns service #100, which is unrelated to cnpy.gdn. The correct PR reference should have been Add cnpy.gdn as private domain #633. (Edit by @groundcat: this domain cnpy.gdn is not expired, Registry Expiry Date: 2025-08-25T00:11:00Z)
• From Candidates for removal #2172: In PR Add cnpy.gdn as private domain #633, the owner of cnpy.gdn referred to understory.live as the user-facing website for the entity, but this domain is also expired and currently unregistered, as confirmed by WHOIS.
• From Candidates for removal #2172: With an invalid _psl record and a lapsed registration, this seems like an obvious case for removal.
• No subdomains were found by third-party tools [1] [2] (no resolvable subdomains). Some from VT but none of them are resolvable.

[angelogladding]

Please do not remove cnpy.gdn. The domain is still active and so are the plans to use it according to the PSL as specified in the original issue.

[angelogladding]

The _psl record was /100 which is the example in the documentation. Obviously at some point I had to update my DNS records and copy/pasted incorrectly. The domain name registration never lapsed. The _psl has been corrected.