fix: remove broken home.activation.dutiApply, keep only system-level activation

home/duti.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }: {
+{ pkgs, ... }: {
   home.packages = [ pkgs.duti ];
 
   xdg.configFile."duti/config".text = ''
@@ -25,11 +25,5 @@
     # mail
     com.apple.mail public.email-message
   '';
-
-  # Apply defaults after linking config
-  home.activation.dutiApply = {
-    data = ''
-      ${pkgs.duti}/bin/duti -d ${config.xdg.configHome}/duti/config
-    '';
-  };
+  # defaults applied via system.activationScripts.defaultApps in hosts/poppy/default.nix
 }