ci: Remove unnecessary assets compilation

.github/workflows/ci_cd.yml

@@ -58,14 +58,6 @@ jobs:
       - run: mkdir -p ./spec/decidim_dummy_app/tmp/screenshots
         name: Create the screenshots folder
       - uses: nanasess/setup-chromedriver@v2
-      - name: Run precompile if needed
-        run: |
-          if [[ -d "app/views" ]] || [[ -d "spec/mailers" ]] || [[ -d "spec/system" ]]; then
-            cd "spec/decidim_dummy_app"
-            bundle exec rails assets:precompile
-          else
-            echo "No need to precompile assets since system folder is empty"
-          fi
       - run: bundle exec rspec
         name: RSpec
       - uses: codecov/codecov-action@v1