update docs, remove extra test annotation

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

@@ -566,24 +566,25 @@ spring.ai.openai.api-key=your-api-key-here
 
 === Custom API Key Configuration
 
-You can provide your own `ApiKey` implementation by creating a bean with the `@OpenAiApiKey` qualifier:
+You can create a custom instance of `OpenAiApi` with your own `ApiKey` implementation using the builder pattern:
 
 [source,java]
 ----
-@Configuration
-class OpenAiConfig {
-    @Bean
-    @OpenAiApiKey
-    public ApiKey customOpenAiKey() {
-        return new ApiKey() {
-            @Override
-            public String getValue() {
-                // Custom logic to retrieve API key
-                return "your-api-key-here";
-            }
-        };
+ApiKey customApiKey = new ApiKey() {
+    @Override
+    public String getValue() {
+        // Custom logic to retrieve API key
+        return "your-api-key-here";
     }
-}
+};
+
+OpenAiApi openAiApi = OpenAiApi.builder()
+    .apiKey(customApiKey)
+    .build();
+
+// Create a chat client with the custom OpenAiApi instance
+OpenAiChatClient chatClient = new OpenAiChatClient(openAiApi);
+
 ----
 
 This is useful when you need to:
@@ -592,4 +593,3 @@ This is useful when you need to:
 * Rotate API keys dynamically
 * Implement custom API key selection logic
 
-NOTE: If you provide multiple `ApiKey` beans, make sure to use the `@OpenAiApiKey` qualifier to specify which one should be used for OpenAI operations. Without proper qualification, Spring will fail to start due to ambiguous bean definitions.

spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/openai/OtherApiKey.java

@@ -1,35 +0,0 @@
-/*
- * Copyright 2023-2024 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.ai.autoconfigure.openai;
-
-import org.springframework.beans.factory.annotation.Qualifier;
-
-import java.lang.annotation.*;
-
-/**
- * Test qualifier annotation for other API key beans. Used to test multiple API key
- * configurations.
- *
- * @author Mark Pollack
- */
-@Target({ ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.TYPE, ElementType.ANNOTATION_TYPE })
-@Retention(RetentionPolicy.RUNTIME)
-@Documented
-@Qualifier
-public @interface OtherApiKey {
-
-}