chore(users): grfn -> aspen

Change-Id: I6c6847fac56f0a9a1a2209792e00a3aec5e672b9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10809
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: lukegb <lukegb@tvl.fyi>

users/grfn/system/home/modules/lib/zshFunctions.nix

@@ -1,23 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-{
-  options = {
-    programs.zsh.functions = mkOption {
-      description = "An attribute set that maps function names to their source";
-      default = { };
-      type = with types; attrsOf (either str path);
-    };
-  };
-
-  config.programs.zsh.initExtra = concatStringsSep "\n" (
-    mapAttrsToList
-      (name: funSrc: ''
-        function ${name}() {
-          ${funSrc}
-        }
-      '')
-      config.programs.zsh.functions
-  );
-}