remove line from not used option

configuration.nix

@@ -12,8 +12,6 @@
       ./import.nix
     ];
 
-  # Define a user account. Don't forget to set a password with ‘passwd’.
-
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It‘s perfectly fine and recommended to leave