chore(nix): refactor SGX configuration for nixtee1

- Removed SGX-specific settings including `aesmd_dcap`, `sgx_default_qcnl.conf`, and `security.tpm2` configurations.
- Updated `system.stateVersion` and switched kernel modules to `kvm-amd`.
- Adjusted disk UUIDs and removed unused `/boot` filesystem definition.

systems/x86_64-linux/sgx-nixos/hardware-configuration.nix

@@ -1,46 +0,0 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
-# and may be overwritten by future invocations.  Please make changes
-# to /etc/nixos/configuration.nix instead.
-{
-  config,
-  lib,
-  pkgs,
-  modulesPath,
-  ...
-}:
-
-{
-  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
-
-  boot.initrd.availableKernelModules = [
-    "ahci"
-    "xhci_pci"
-    "virtio_pci"
-    "sr_mod"
-    "virtio_blk"
-  ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ ];
-
-  fileSystems."/" = {
-    device = "/dev/disk/by-uuid/ebb90474-ddcb-484b-9663-d71863827af4";
-    fsType = "ext4";
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/941C-7B02";
-    fsType = "vfat";
-  };
-
-  swapDevices = [ ];
-
-  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
-  # (the default) this is the recommended approach. When using systemd-networkd it's
-  # still possible to use this option, but it's recommended to use it in conjunction
-  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
-  networking.useDHCP = lib.mkDefault true;
-  # networking.interfaces.enp1s0.useDHCP = lib.mkDefault true;
-
-  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-}