chore: remove unused build step

Author: joscha

.github/workflows/test.yml

@@ -19,12 +19,6 @@ jobs:
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
       - name: Install devenv.sh
         run: nix profile install nixpkgs#devenv
-      - name: make sure there is no diff
-        run: devenv shell generate-model
-      - name: Diff porcelain
-        uses: mmontes11/diff-porcelain@v0.0.1
-        with:
-          message: Generated spec file is not up to date. Run 'devenv shell generate-model' and commit the changes or devenv shell refresh-model to pull the latest OpenAPI specification, generate and commit.
       - name: Build the devenv shell and run any pre-commit hooks
         run: devenv test
         env: