fix: copy polybar's themes into this repo

overlays/polybar-themes-simple/default.nix

@@ -1,3 +0,0 @@
-{polybar-themes, ...} : (_: super: {
-  polybar-themes-simple = super.callPackage ./package.nix { inherit polybar-themes;};
-})

overlays/polybar-themes-simple/package.nix

@@ -1,60 +0,0 @@
-{
-  pkgs,
-  polybar-themes,
-  ...
-}:
-
-# use the themes provided by:
-# https://github.com/adi1090x/polybar-themes
-pkgs.nuenv.mkDerivation {
-  name = "polybar-themes-simple";
-  src = polybar-themes;
-  debug = true;
-  packages = [pkgs.coreutils];
-  build = ''
-    let out_fonts = $"($env.out)/fonts"
-    mkdir $out_fonts
-    cp -rf fonts/* $out_fonts
-
-    let out_themes = $"($env.out)/themes"
-    mkdir $out_themes
-    cp -rf simple/* $out_themes
-
-    # adjust the font size
-    ls "simple/**/config.ini" | each { |it|
-      let tmp_it = $"tmp/($it.name)"
-      # prepare the output directory
-      $tmp_it | path dirname | mkdir $in
-      echo $"cusomizing ($it.name) and saving to ($tmp_it)"
-
-      open $it.name
-      # remova all font settings
-      | str replace --all --multiline -r "font-[0-4].*=.+|height.*=.+" ""
-      # add hidpi font settings
-      | append "
-    height = 64
-    ; Text Fonts
-    font-0 = Iosevka Nerd Font:style=Medium:size=15;4
-
-    ; Icons Fonts
-    font-1 = feather:style=Medium:size=24;3
-
-    ; Powerline Glyphs
-    font-2 = Iosevka Nerd Font:style=Medium:size=32;3
-
-    ; Larger font size for bar fill icons
-    font-3 = Iosevka Nerd Font:style=Medium:size=24;4
-
-    ; Smaller font size for shorter spaces
-    font-4 = Iosevka Nerd Font:style=Medium:size=12;4
-      "
-      | save -f $tmp_it
-    }
-
-    echo "all the themes:"
-    let log = ls tmp/**/*
-    echo $log
-    echo "copying the tmp themes to ($out_themes)"
-    cp -rf tmp/simple/* $out_themes
-  '';
-}