remove pnpm build

Author: gmichelo

.github/workflows/pnpm.yaml

@@ -33,8 +33,6 @@ jobs:
             ./node_modules/.cache
       - run: pnpm install
         working-directory: ./demo/fullstack
-      - run: pnpm build
-        working-directory: ./demo/fullstack
       - name: Print cache metadata file
         run :
           cat /cache/.ns/cache-metadata.json