Fixes #1543 Inaccurate warning for VertexAI Gemini Function Calling

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>

Author: ddobrin

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/vertexai-gemini-chat.adoc

@@ -115,10 +115,6 @@ https://github.com/spring-projects/spring-ai/blob/main/spring-ai-core/src/main/j
 
 == Function Calling
 
-WARNING: As of 30th of April 2023, the Vertex AI `Gemini Pro` model has significantly degraded the support for function calling! While the feature is still available, it is not recommended for production use.
-Apparently the Gemini Pro can not handle anymore the function name correctly.
-The parallel function calling is gone as well.
-
 You can register custom Java functions with the VertexAiGeminiChatModel and have the Gemini Pro model intelligently choose to output a JSON object containing arguments to call one or many of the registered functions.
 This is a powerful technique to connect the LLM capabilities with external tools and APIs.
 Read more about xref:api/chat/functions/vertexai-gemini-chat-functions.adoc[Vertex AI Gemini Function Calling].