chore(homes): remove broken x86_64-linux home configs

- harald@sgx-nixos: orphan, no matching NixOS system and no
  home.stateVersion set, so it failed standalone evaluation
- harald@sgx-azure: referenced metacfg.tools.direnv.enable but no
  modules/home/tools/direnv exists, causing eval failure

homes/x86_64-linux/harald@sgx-azure/default.nix

@@ -1,38 +0,0 @@
-{
-  config,
-  ...
-}:
-{
-  home = {
-    username = "harald";
-    homeDirectory = "/home/${config.home.username}";
-    stateVersion = "23.11"; # Please read the comment before changing.
-    sessionPath = [ "$HOME/bin" ];
-  };
-
-  nix.settings = {
-    substituters = [
-      "https://cache.nixos.org"
-    ];
-    trusted-public-keys = [
-      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
-    ];
-  };
-
-  metacfg = {
-    cli-apps = {
-      bash.enable = true;
-      fish.enable = true;
-      neovim.enable = false;
-      tmux.enable = true;
-      bat.enable = true;
-      starship.enable = true;
-      home-manager.enable = true;
-    };
-    tools = {
-      git.enable = true;
-      direnv.enable = true;
-      ssh.enable = true;
-    };
-  };
-}

homes/x86_64-linux/harald@sgx-nixos/default.nix

@@ -1,25 +0,0 @@
-{ lib, config, ... }:
-{
-  home.sessionPath = [ "$HOME/bin" ];
-
-  metacfg = {
-    user = {
-      enable = true;
-      inherit (config.snowfallorg.user) name;
-    };
-    cli-apps = {
-      bash.enable = true;
-      fish.enable = true;
-      neovim.enable = false;
-      bat.enable = true;
-      starship.enable = true;
-      home-manager.enable = true;
-    };
-    tools = {
-      git.enable = true;
-    };
-  };
-
-  xdg.enable = true;
-  xdg.mime.enable = true;
-}