docs: remove unused ModelSettings import in tool use behavior example

docs/models/index.md

@@ -349,7 +349,9 @@ Within a single workflow, you may want to use different models for each agent. F
     While our SDK supports both the [`OpenAIResponsesModel`][agents.models.openai_responses.OpenAIResponsesModel] and the [`OpenAIChatCompletionsModel`][agents.models.openai_chatcompletions.OpenAIChatCompletionsModel] shapes, we recommend using a single model shape for each workflow because the two shapes support a different set of features and tools. If your workflow requires mixing and matching model shapes, make sure that all the features you're using are available on both.
 
 ```python
-from agents import Agent, Runner, AsyncOpenAI, OpenAIChatCompletionsModel
+from openai import AsyncOpenAI
+
+from agents import Agent, Runner, OpenAIChatCompletionsModel
 import asyncio
 
 spanish_agent = Agent(

docs/voice/quickstart.md

@@ -132,7 +132,6 @@ import sounddevice as sd
 from agents import (
     Agent,
     function_tool,
-    set_tracing_disabled,
 )
 from agents.voice import (
     AudioInput,