refactor(hosts): consolidate host configurations

modules/hosts/vega/default.nix

@@ -1,41 +0,0 @@
-{
-  inputs,
-  outputs,
-  config,
-  ...
-}:
-let
-  hostName = "vega";
-  userName = "nix-on-droid";
-  userEmail = "t@tux.rs";
-  system = "aarch64-linux";
-  unstable = true;
-  nixpkgs = if unstable then inputs.nixpkgs else inputs.nixpkgs-stable;
-in
-{
-  flake.nixOnDroidConfigurations."${hostName}" = inputs.nix-on-droid.lib.nixOnDroidConfiguration {
-    pkgs = import nixpkgs {
-      system = system;
-      config = {
-        allowUnfree = true;
-        joypixels.acceptLicense = true;
-      };
-      overlays = builtins.attrValues inputs.self.overlays;
-    };
-    extraSpecialArgs = {
-      inherit
-        inputs
-        outputs
-        hostName
-        userName
-        userEmail
-        ;
-    };
-
-    modules = [
-      config.flake.modules.droid.core
-      config.flake.modules.droid.networking
-      config.flake.modules.droid.${hostName}
-    ];
-  };
-}