chore: Remove backend build step from cli build

.github/workflows/ci.yml

@@ -98,6 +98,5 @@ jobs:
       - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
       - run: echo "🖥️ The workflow is now ready to test your code on the runner."
       - run: yarn --frozen-lockfile && yarn lerna bootstrap
-      - run: cd packages/backend && yarn build
       - run: cd packages/cli && yarn build
       - run: echo "🍏 This job's status is ${{ job.status }}."