docs: Remove duplicate NoOpTemplateRenderer mention in chatclient.adoc (#3414)

Fixes: #3414

Auto-cherry-pick to 1.0.x

Signed-off-by: YunKui Lu <[email protected]>

Author: YunKuiLu

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chatclient.adoc

@@ -336,8 +336,6 @@ By default, Spring AI uses the `StTemplateRenderer` implementation, which is bas
 
 Spring AI also provides a `NoOpTemplateRenderer` for cases where no template processing is desired.
 
-Spring AI also provides a `NoOpTemplateRenderer`.
-
 NOTE: The `TemplateRenderer` configured directly on the `ChatClient` (via `.templateRenderer()`) applies only to the prompt content defined directly in the `ChatClient` builder chain (e.g., via `.user()`, `.system()`).
 It does *not* affect templates used internally by xref:api/retrieval-augmented-generation.adoc#_questionansweradvisor[Advisors] like `QuestionAnswerAdvisor`, which have their own template customization mechanisms (see xref:api/retrieval-augmented-generation.adoc#_custom_template[Custom Advisor Templates]).