[bot] nixos/*: remove unused arguments in lambdas

nixos/modules/programs/atop.nix

@@ -1,6 +1,6 @@
 # Global configuration for atop.
 
-{ config, lib, pkgs, ... }:
+{ config, lib, ... }:
 
 with lib;
 

nixos/modules/programs/bcc.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, ... }:
 {
   options.programs.bcc.enable = lib.mkEnableOption "bcc";
 

nixos/modules/programs/environment.nix

@@ -2,7 +2,7 @@
 
 # Most of the stuff here should probably be moved elsewhere sometime.
 
-{ config, lib, pkgs, ... }:
+{ config, lib, ... }:
 
 with lib;
 

nixos/modules/programs/shell.nix

@@ -1,6 +1,6 @@
 # This module defines a standard configuration for NixOS shells.
 
-{ config, lib, pkgs, ... }:
+{ config, lib, ... }:
 
 with lib;
 

nixos/modules/programs/systemtap.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, ... }:
 
 with lib;