retire toaster and remove dead code

modules/emacs.nix

@@ -1,29 +0,0 @@
-{ pkgs, inputs, lib, ... }:
-
-{
-  environment.systemPackages = with pkgs; [
-    direnv
-  ];
-
-  nixpkgs.overlays = [
-    inputs.emacs-overlay.overlay
-  ];
-
-  services.emacs = {
-    install = true;
-    enable = false;
-    package = with pkgs; ((emacsPackagesFor (emacs-pgtk.overrideAttrs (old: {
-      passthru = old.passthru // {
-        treeSitter = true;
-      };
-    }))).emacsWithPackages (epkgs: with epkgs; [
-      # treesitter bits
-      treesit-grammars.with-all-grammars
-
-      vterm
-      pdf-tools
-    ]));
-    defaultEditor = lib.mkDefault true;
-  };
-
-}