remove dotenv delete in gh-action only needed locally

Author: posthello-code

.github/workflows/build.yaml

@@ -14,7 +14,6 @@ jobs:
       - run: dart pub global activate dart_frog_cli
       - run: dart_frog build
       - run: cd build
-      - run: rm .env
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Login to Docker Hub