removed redundant stuff

modules/system/audio.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }: {
+{ ... }: {
   # Enable sound with pipewire.
   sound.enable = false;
   hardware.pulseaudio.enable = false;
@@ -9,7 +9,4 @@
     pulse.enable = true;
     #jack.enable = true;
   };
-  environment.systemPackages = with pkgs; [
-    pamixer
-  ];
 }

modules/system/home/niri-setup/default.nix

@@ -2,7 +2,6 @@
   theme = import ../../../../colors.nix;
 in lib.mkIf (osConfig.withNiri) {
   home.packages = with pkgs; [
-    swaybg
     iwgtk
     blueberry
   ];

modules/system/niri/default.nix

@@ -2,7 +2,6 @@
   programs.niri.enable = true;
   environment.systemPackages = with pkgs; [
     brightnessctl
-    waybar
     swaybg
     pamixer
   ];