update

mec-teacher/src/main/java/com/ym/mec/teacher/controller/TenantConfigController.java

@@ -4,7 +4,6 @@ import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;