fix: remove the Determinate Nix Installer

it's troublesome when work with nix-darwin.

minimal/README.md

@@ -4,8 +4,7 @@
 
 ## How to Start
 
-1. Install Nix package manager via [Nix Official](https://nixos.org/download.html#nix-install-macos) or [The Determinate Nix Installer](https://github.com/DeterminateSystems/nix-installer)
-   1. I would recommend using the Determinate Nix Installer, because it is more user-friendly and can be easily uninstalled.
+1. Install Nix package manager via [Nix Official](https://nixos.org/download.html#nix-install-macos).
 2. Read all the files in this `minimal` folder, and understand what they do.
    1. If you have trouble understanding, [ryan4yin/nixos-and-flakes-book](https://github.com/ryan4yin/nixos-and-flakes-book) is a good resource to learn nix and flakes.
 3. Install Homebrew, see <https://brew.sh/>