Use sops for private key distribution

nixos/modules/borgbackup.nix

@@ -132,7 +132,6 @@ in {
       };
     };
     environment.persistence.${config.impermanence.name} = {
-      /*
       users.fsaccount.directories = [
         {
           directory = ".ssh"; # SSH Key with access to FS Account and known_hosts
@@ -140,18 +139,6 @@ in {
         }
       ];
     };
-      */
-      users.fsaccount.files = [
-        {
-          file = ".ssh/known_hosts";
-          parentDirectory = {
-            mode = "u=rwx,g=,o=";
-            user = "fsaccount";
-            group = "users";
-          };
-        }
-      ];
-    };
     sops.secrets.backupKey = {
       sopsFile = ../machines/bragi/backupKey.yaml;
       owner = config.users.users.fsaccount.name;