removing cuda workaround

systems/bob/llms.nix

@@ -1,20 +1,8 @@
-{ pkgs, ... }:
-let
-  # CMake 4.3.4 requires nvcc to be present in CUDAToolkit_ROOT.
-  # Remove after https://github.com/NixOS/nixpkgs/pull/545542 reaches nixos-unstable.
-  ollama-cuda = pkgs.ollama-cuda.overrideAttrs (oldAttrs: {
-    preBuild = ''
-      export CUDAToolkit_ROOT="${pkgs.cudaPackages.cuda_nvcc};$CUDAToolkit_ROOT"
-    ''
-    + oldAttrs.preBuild;
-  });
-in
 {
   services.ollama = {
     user = "ollama";
     host = "0.0.0.0";
     enable = true;
-    package = ollama-cuda;
 
     syncModels = false;
     loadModels = [