removed deprecated gen_ai.system attribute

Author: wrisa

instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/callback_handler.py

@@ -61,8 +61,6 @@ def on_chat_model_start(
             parent_run_id=parent_run_id,
             request_model=request_model,
         )
-        name = serialized.get("name") or kwargs.get("name") or "ChatLLM"
-        span.set_attribute(GenAI.GEN_AI_SYSTEM, name)
 
         if invocation_params is not None:
             top_p = invocation_params.get("top_p")

instrumentation-genai/opentelemetry-instrumentation-langchain/tests/test_llm_call.py

@@ -46,7 +46,6 @@ def assert_openai_completion_attributes(
 ):
     assert span.name == "chat gpt-3.5-turbo"
     assert span.attributes[gen_ai_attributes.GEN_AI_OPERATION_NAME] == "chat"
-    assert span.attributes[gen_ai_attributes.GEN_AI_SYSTEM] == "ChatOpenAI"
     assert (
         span.attributes[gen_ai_attributes.GEN_AI_REQUEST_MODEL]
         == "gpt-3.5-turbo"