chore(nixsgx): remove nixsgx-flake input and overlay

- Removed the `nixsgx-flake` input and its associated overlay from `flake.nix` and `extern` overlays.
- Updated `default.nix` to exclude `nixsgx-flake` from update-inputs script.
- Simplifies configuration by deprecating unused or unnecessary components.

flake.nix

@@ -60,11 +60,6 @@
     sops-nix.url = "github:Mic92/sops-nix";
     sops-nix.inputs.nixpkgs.follows = "nixpkgs";
 
-    nixsgx-flake = {
-      url = "github:matter-labs/nixsgx";
-      # inputs.nixpkgs.follows = "nixpkgs";
-    };
-
     simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-25.05";
     simple-nixos-mailserver.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -107,7 +102,6 @@
       ];
 
       overlays = with inputs; [
-        nixsgx-flake.overlays.default
         (final: prev: {
           inherit (claude.packages.${prev.system}) claude-desktop-with-fhs;
         })

modules/nixos/services/base/default.nix

@@ -162,8 +162,6 @@ in
         "--update-input"
         "unstable"
         "--update-input"
-        "nixsgx-flake"
-        "--update-input"
         "home-manager"
         "--no-write-lock-file"
         "-L"

overlays/extern/default.nix

@@ -1,3 +1,3 @@
 { channels, ... }: final: prev: {
-  inherit (channels.nixpkgs.nixsgx) sgx-psw;
+  # inherit (channels.nixpkgs.nixsgx) sgx-psw;
 }