remove unused python from rustup shell

rustup.nix

@@ -4,11 +4,6 @@
     libPath = with pkgs; lib.makeLibraryPath [
       # load external libraries that you need in your rust project here
     ];
-    python = (pkgs.python3.withPackages (python-pkgs: [
-      python-pkgs.pynacl
-      python-pkgs.zeroconf
-      python-pkgs.bleak
-    ]));
   in
   pkgs.mkShell rec {
     nativeBuildInputs= with pkgs; [
@@ -16,7 +11,6 @@
       rustup
       lua5_3
       pkg-config
-#      sops
     ];
     buildInputs = with pkgs; [
       clang