refactor(emacs): Update Nix module snippet

modules/home/users/crumb/emacs/snippets/nix-mode/__module

@@ -7,15 +7,13 @@
 # --
 { config, lib, pkgs, ... }:
 
-with lib;
-
 let cfg = config.${1:`this-current-file-name`};
 in {
   options.$1 = {
-    enable = mkEnableOption "$2";
+    enable = lib.mkEnableOption "$2";
   };
 
-  config = mkIf cfg.enable {
+  config = lib.mkIf cfg.enable {
     $3
   };
 }