Remove age.rekey from lazyworkhorse (module not available, host key handles decryption directly)

hosts/lazyworkhorse/configuration.nix

@@ -588,11 +588,4 @@
   };
 
 
-  # agenix-rekey configuration (for builder_key re-encryption at build time)
-  age.rekey = {
-    masterIdentities = [
-      "/home/gortium/.ssh/gortium_ssh_key"
-    ];
-  };
-
 }