update oai config list

OAI_CONFIG_LIST_sample

@@ -1,19 +1,12 @@
 // Please modify the content, remove these four lines of comment and rename this file to OAI_CONFIG_LIST to run the sample code.
 // If using pyautogen v0.1.x with Azure OpenAI, please replace "base_url" with "api_base" (line 14 and line 21 below). Use "pip list" to check version of pyautogen installed.
 //
-// NOTE: This configuration lists GPT-4 as the default model, as this represents our current recommendation, and is known to work well with AutoGen. If you use a model other than GPT-4, you may need to revise various system prompts (especially if using weaker models like GPT-3.5-turbo). Moreover, if you use models other than those hosted by OpenAI or Azure, you may incur additional risks related to alignment and safety. Proceed with caution if updating this default.
+// NOTE: This configuration lists gpt-4o as the default model. If you use a different model, you may need to revise various system prompts (especially if using weaker models like gpt-4o-mini). Proceed with caution when updating this default and be aware of additional risks related to alignment and safety.
 [
     {
-        "model": "gpt-4",
+        "model": "gpt-4o",
         "api_key": "<your OpenAI API key here>",
-        "tags": ["gpt-4", "tool"]
-    },
-    {
-        "model": "<your Azure OpenAI deployment name>",
-        "api_key": "<your Azure OpenAI API key here>",
-        "base_url": "<your Azure OpenAI API base here>",
-        "api_type": "azure",
-        "api_version": "<your Azure OpenAI API version here>"
+        "tags": ["gpt-4o", "tool", "vision"]
     },
     {
         "model": "<your Azure OpenAI deployment name>",