fix Qwen model 不支持 search

langchat-core/src/main/java/cn/tycoding/langchat/core/provider/build/QWenModelBuildHandler.java

@@ -69,7 +69,6 @@ public class QWenModelBuildHandler implements ModelBuildHandler {
                     .apiKey(model.getApiKey())
                     .modelName(model.getModel())
                     .baseUrl(model.getBaseUrl())
-                    .enableSearch(true)
                     .maxTokens(model.getResponseLimit())
                     .temperature(Float.parseFloat(model.getTemperature().toString()))
                     .topP(model.getTopP())

langchat-core/src/main/java/cn/tycoding/langchat/core/service/impl/LangChatServiceImpl.java

@@ -103,12 +103,9 @@ public class LangChatServiceImpl implements LangChatService {
                     .embeddingModel(embeddingModel)
                     .dynamicFilter(filter)
                     .build();
-            aiServices.contentRetriever(contentRetriever);
             aiServices.retrievalAugmentor(DefaultRetrievalAugmentor
                     .builder()
                     .contentRetriever(contentRetriever)
-                    .queryRouter(new DefaultQueryRouter())
-                    .executor(req.getExecutor())
                     .build());
         }
         Agent agent = aiServices.build();