fix: remove privileged from darwin

Closes: https://github.com/snowfallorg/flake/issues/5 Per response generated from [homebrew](https://docs.brew.sh/FAQ#why-does-homebrew-say-sudo-is-bad) nix-darwin homebrew module will fail to run while executed as sudo. nix-darwin will request elevated privileges when it detects its not run with [sudo](https://github.com/LnL7/nix-darwin/blob/master/pkgs/nix-tools/darwin-rebuild.sh#L206) on it's own.