Frank Denis a9e5ebe46b Revert "Re-add cert hashes for Cloudflare"
This reverts commit d46ec48730cef5e2868d3e48e0780f1f9ee0a4b7.

It took 5 days before breaking

cloudflare-ipv6:
[2024-01-04 10:59:07] [NOTICE] Advertised cert: [CN=cloudflare-dns.com,O=Cloudflare\, Inc.,L=San Francisco,ST=California,C=US] [8bb0c5bc0d9d151ee555e1d3f5a23bfb96921587fa564d2082c2eeafdea580a0]
[2024-01-04 10:59:07] [NOTICE] Advertised cert: [CN=DigiCert TLS Hybrid ECC SHA384 2020 CA1,O=DigiCert Inc,C=US] [2a15f5d6acb6e7c0901ade4ebbc743b2ccd489032b46e1642f0693683001258a]
[2024-01-04 10:59:07] [CRITICAL] [cloudflare-ipv6] Certificate hash [880cfbfb5b0780a9a81e45bea74ec32ec622b359c9e5d7f53c469d74080966cf] not found
2024-01-04 11:06:03 +01:00
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