Remove obsolete NPM certificate repository

dns_sync/certificates/models.py

@@ -1,5 +1,4 @@
 from dataclasses import dataclass
-from datetime import datetime
 
 
 @dataclass(frozen=True)
@@ -15,21 +14,3 @@ class CertificateIdentity:
     @property
     def key(self) -> str:
         return ",".join(self.domains)
-
-
-@dataclass(frozen=True)
-class CertificateState:
-    """
-    Non-secret certificate state suitable for discovery, comparison, and logs.
-    """
-
-    identity: CertificateIdentity
-    local_id: int
-    provider: str
-    nice_name: str
-    valid_from: datetime | None
-    expires_on: datetime | None
-    cluster_managed: bool
-    acme_renew: bool
-    dns_challenge: bool
-    source: str