Cleanup backup settings

hosts/linode/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, lib, ... }:
 
 {
 	imports = [
@@ -10,11 +10,21 @@
 		./postgres.nix
 		./synapse.nix
 	];
+
 	greg = {
 		home = false;
 		linode.enable = true;
 		tailscale.enable = true;
 	};
+
+	programs.ssh.extraConfig = lib.strings.concatStringsSep "\n" [
+		"Host chronicles.shire-zebra.ts.net"
+		"    User backup"
+		"    IdentityFile /etc/ssh/backup_ed25519"
+		"    StrictHostKeyChecking no"
+		"    UserKnownHostsFile /dev/null"
+	];
+
 	networking = {
 		hostName = "linode";
 		domain = "thehellings.com";
@@ -22,10 +32,9 @@
 			"100.88.91.27"
 		];
 	};
+
 	environment.systemPackages = with pkgs; [
 		bind
-		forgejo
-		gitea-actions-runner
 		graphviz
 		nix-du
 	];