Refactor Nix package definitions for improved clarity and consistency, including updates to overlays, dependencies, and build inputs across multiple packages.

pkgs/torzu/package.nix

@@ -22,7 +22,6 @@
   lz4,
   python3,
   unzip,
-  nix-update-script,
   nlohmann_json,
   nv-codec-headers-12,
   pkg-config,
@@ -30,7 +29,6 @@
   vulkan-headers,
   vulkan-loader,
   yasm,
-  simpleini,
   zlib,
   vulkan-memory-allocator,
   zstd,