bootloader: reunited desktop and laptop config

modules/hardware/bootloader.nix

@@ -1,19 +1,5 @@
 _: {
-  flake.nixosModules.bootloader-laptop = {
-    inputs,
-    pkgs,
-    ...
-  }: {
-    # grub theme
-    boot.loader.grub = {
-      theme = inputs.nixos-grub-themes.packages.${pkgs.system}.nixos; # if you want to use nixos grub theme
-    };
-
-    # Bootloader.
-    boot.loader.systemd-boot.enable = true;
-    boot.loader.efi.canTouchEfiVariables = true;
-  };
-  flake.nixosModules.bootloader-desktop = {
+  flake.nixosModules.bootloader = {
     inputs,
     pkgs,
     ...