remove exporter from arize-phoenix global callback handler (#10465)

llama_index/callbacks/arize_phoenix_callback.py

@@ -5,12 +5,9 @@ from llama_index.callbacks.base_handler import BaseCallbackHandler
 
 def arize_phoenix_callback_handler(**kwargs: Any) -> BaseCallbackHandler:
     try:
-        from phoenix.trace.exporter import HttpExporter
         from phoenix.trace.llama_index import OpenInferenceTraceCallbackHandler
     except ImportError:
         raise ImportError(
             "Please install Arize Phoenix with `pip install -q arize-phoenix`"
         )
-    if "exporter" not in kwargs:
-        kwargs = {"exporter": HttpExporter(), **kwargs}
     return OpenInferenceTraceCallbackHandler(**kwargs)