refactor(onlineperf): 移除冗余的fetchDataCalTask方法实现

- 删除了fetchDataCalTask方法的重复实现
- 保留接口默认方法处理逻辑
- 简化类结构，减少代码冗余

code/swc/nckd-jxccl-swc/src/main/java/nckd/jxccl/swc/onlineperf/common/OnlinePerfFetchDataService.java

@@ -100,9 +100,4 @@ public class OnlinePerfFetchDataService implements ICustomFetchDataService {
         }
         return resultMap;
     }
-
-    @Override
-    public Map<String, Object> fetchDataCalTask(Long calTaskId, Map<String, Object> paramsMap, Map<String, Object> extParamMap) {
-        return ICustomFetchDataService.super.fetchDataCalTask(calTaskId, paramsMap, extParamMap);
-    }
 }