updated to use new shed module schema

modules/home/programs/nixvim/default.nix

@@ -1,14 +1,6 @@
 { env, config, pkgs, host, self, ... }: {
   programs.nixvim = {
     nixpkgs.useGlobalPackages = true;
-    extraPackages = [
-      pkgs.cargo
-      pkgs.rustc
-      pkgs.clippy
-      pkgs.rustup
-      pkgs.rust-analyzer
-      pkgs.nerd-fonts.envy-code-r
-    ];
   };
   imports = [ ./plugins ./options.nix ./keymaps.nix ./autocmd.nix ];
 }