[appBuilder] 去掉无用的import引入 (ModelEngine-Group#195)

Co-authored-by: wuayee <wuayee@noreply.gitcode.com>

Author: wuayee

app-knowledge/plugins/knowledge-manager/src/test/java/modelengine/jade/knowledge/KnowledgeControllerTest.java

@@ -13,7 +13,6 @@
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.when;
 
-import modelengine.fel.tool.service.ToolGroupService;
 import modelengine.fit.http.client.HttpClassicClientResponse;
 import modelengine.fit.jane.task.gateway.Authenticator;
 import modelengine.fitframework.annotation.Fit;