remove unused host modules

groups/cryos/default.nix

@@ -1,8 +1,4 @@
-{
+{lib, ...}: {
-  pkgs,
-  lib,
-  ...
-}: {
   imports = [
     ./programs.nix
   ];

hosts/modules/core/bluetooth.nix

@@ -1,12 +0,0 @@
-{ pkgs, ... }:
-
-{
-  # Enable Bluetooth
-  hardware.bluetooth.enable = true;
-  hardware.bluetooth.powerOnBoot = false;
-
-  # TODO: this should be managed by home-manager
-  environment.systemPackages = with pkgs; [
-    overskride
-  ];
-}

hosts/modules/core/bootloader/grub.nix

@@ -1,15 +0,0 @@
-{...}:
-
-{
-  boot.loader = {
-    efi = {
-	  canTouchEfiVariables = true;
-	  efiSysMountPoint = "/boot/efi";
-	};
-	grub = {
-	  efiSupport = true;
-	  #efiInstallAsRemovable = true; # in case canTouchEfiVariables doesn't work on your system
-	  device = "nodev";
-	};
-  };
-}

hosts/modules/core/bootloader/systemd-boot.nix

@@ -1,8 +0,0 @@
-{...}:
-
-{
-  boot.loader = {
-    systemd-boot.enable = true;
-	efi.canTouchEfiVariables = true;
-  };
-}