Drop tiktoken config

Author: TimPansino

tests/mlmodel_langchain/conftest.py

@@ -100,6 +100,7 @@ def openai_clients(vcr_recording, monkeypatch):
         for env_var in os.environ.keys():
             if env_var.startswith("OPENAI_"):
                 monkeypatch.delenv(env_var)
+        monkeypatch.delenv("TIKTOKEN_CACHE_DIR")
         openai_api_key = os.environ["OPENAI_API_KEY"] = "NOT-A-REAL-SECRET"
 
     chat = ChatOpenAI(api_key=openai_api_key)