Revert "add sqlite for restores"

This reverts commit 474184baa7.

.github/workflows/flake-update.yml

@@ -15,8 +15,6 @@ jobs:
       - name: Install nix
         uses: https://github.com/DeterminateSystems/nix-installer-action@main
 
-      - run: nix profile install nixpkgs#sqlite
-
       - name: Restore Nix store
         id: restore
         uses: nix-community/cache-nix-action@v6