thunderbird: move from module to user config

modules/home-manager/default.nix

@@ -11,7 +11,6 @@
     ./programs/recording.nix
     ./programs/slack.nix
     ./programs/steam.nix
-    ./programs/thunderbird.nix
     ./programs/vscode.nix
     ./programs/zoom.nix
   ];

modules/home-manager/programs/thunderbird.nix

@@ -1,41 +0,0 @@
-{
-  config,
-  lib,
-  self,
-  ...
-}:
-
-let
-  cfg = config.modules.programs.thunderbird;
-in
-{
-  options.modules.programs.thunderbird = {
-    enable = lib.mkOption {
-      default = false;
-      example = true;
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    home.file.".thunderbird/Default/chrome/thunderbird-gnome-theme".source =
-      self.inputs.thunderbird-gnome-theme;
-
-    home.programs.thunderbird = {
-      enable = true;
-      profiles.Default = {
-        isDefault = true;
-        userChrome = ''
-          @import "thunderbird-gnome-theme/userChrome.css";
-        '';
-        userContent = ''
-          @import "thunderbird-gnome-theme/userContent.css";
-        '';
-        settings = {
-          ## GNOME theme
-          "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
-          "svg.context-properties.content.enabled" = true;
-        };
-      };
-    };
-  };
-}