fix env files and cleanup a test as per MR comments

backend/requirements.txt

@@ -7,8 +7,6 @@ neo4j==5.18.0
 ruff==0.3.5
 jinja2==3.1.3
 websockets==12.0
-azure-core==1.30.1
-azure-storage-blob==12.20.0
 cffi==1.16.0
 cryptography==42.0.7
 isodate==0.6.1

backend/tests/api/app_test.py

@@ -7,21 +7,6 @@
 expected_message = "Hello to you too! From InferESG"
 
 
-@pytest.fixture
-def mock_initial_data(mocker):
-    blob_service_client = mocker.patch("src.api.app.BlobServiceClient", return_value=mocker.Mock())
-    container_client = mocker.Mock()
-    blob_service_client.get_container_client.return_value = container_client
-    blob_client = mocker.Mock()
-    container_client.get_blob_client.return_value = blob_client
-    download_stream = mocker.Mock()
-    blob_client.download_blob.return_value = download_stream
-    mock_data = mocker.Mock()
-    mocker.patch("src.api.app.json.loads", return_value=mock_data)
-
-    return mock_data
-
-
 def test_health_check_response_healthy(mocker):
     mock_test_connection = mocker.patch("src.api.app.test_connection", return_value=True)
 
@@ -64,7 +49,7 @@ def test_chat_response_failure(mocker):
 
 
 @pytest.mark.asyncio
-async def test_lifespan_populates_db(mocker, mock_initial_data) -> None:
+async def test_lifespan_populates_db(mocker) -> None:
     mock_dataset_upload = mocker.patch("src.api.app.dataset_upload", return_value=mocker.Mock())
 
     with client: