fix: disables langfuse_plugin code (#3745)

src/backend/base/langflow/main.py

@@ -30,7 +30,6 @@ from langflow.interface.types import get_and_cache_all_types_dict
 from langflow.interface.utils import setup_llm_caching
 from langflow.logging.logger import configure
 from langflow.services.deps import get_cache_service, get_settings_service, get_telemetry_service
-from langflow.services.plugins.langfuse_plugin import LangfuseInstance
 from langflow.services.utils import initialize_services, teardown_services
 
 # Ignore Pydantic deprecation warnings from Langchain
@@ -91,7 +90,6 @@ def get_lifespan(fix_migration=False, socketio_server=None, version=None):
         try:
             initialize_services(fix_migration=fix_migration, socketio_server=socketio_server)
             setup_llm_caching()
-            LangfuseInstance.update()
             initialize_super_user_if_needed()
             task = asyncio.create_task(get_and_cache_all_types_dict(get_settings_service(), get_cache_service()))
             await create_or_update_starter_projects(task)

src/backend/base/langflow/services/settings/base.py

@@ -111,12 +111,6 @@ class Settings(BaseSettings):
     sentry_traces_sample_rate: Optional[float] = 1.0
     sentry_profiles_sample_rate: Optional[float] = 1.0
 
-    # PLUGIN_DIR: Optional[str] = None
-
-    langfuse_secret_key: Optional[str] = None
-    langfuse_public_key: Optional[str] = None
-    langfuse_host: Optional[str] = None
-
     store: Optional[bool] = True
     store_url: Optional[str] = "https://api.langflow.store"
     download_webhook_url: Optional[str] = (