Remove AZURE_OPENAI_VERSION from test configuration

Author: Copilot

tests/conftest.py

@@ -63,7 +63,6 @@ def mock_session_env(monkeypatch_session):
         monkeypatch_session.setenv("OPENAI_CHAT_HOST", "azure")
         monkeypatch_session.setenv("OPENAI_EMBED_HOST", "azure")
         monkeypatch_session.setenv("AZURE_OPENAI_ENDPOINT", "https://api.openai.com")
-        monkeypatch_session.setenv("AZURE_OPENAI_VERSION", "2024-03-01-preview")
         monkeypatch_session.setenv("AZURE_OPENAI_CHAT_DEPLOYMENT", "gpt-4o-mini")
         monkeypatch_session.setenv("AZURE_OPENAI_CHAT_MODEL", "gpt-4o-mini")
         monkeypatch_session.setenv("AZURE_OPENAI_EMBED_DEPLOYMENT", "text-embedding-3-large")